Bug 1268544: Refactor ProxyAccessible and dependencies; r=tbsaunde
authorAaron Klotz <aklotz@mozilla.com>
Thu, 18 Aug 2016 10:45:55 -0600
changeset 353647 2b4c3a792b14cd3fc33e41c5edee613ec8a0fde2
parent 353646 a2b189275d7a4eba94b110f1ec464eab3d513bfc
child 353648 9912f206b678a5e75f4cb6d91b3a3e1e7124d688
push id1324
push usermtabara@mozilla.com
push dateMon, 16 Jan 2017 13:07:44 +0000
treeherdermozilla-release@a01c49833940 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
reviewerstbsaunde
bugs1268544
milestone51.0a1
first release with
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
last release without
nightly linux32
nightly linux64
nightly mac
nightly win32
nightly win64
Bug 1268544: Refactor ProxyAccessible and dependencies; r=tbsaunde MozReview-Commit-ID: EHV0JR6NmKf
accessible/ipc/ProxyAccessible.cpp
accessible/ipc/ProxyAccessible.h
accessible/ipc/ProxyAccessibleBase.cpp
accessible/ipc/ProxyAccessibleBase.h
accessible/ipc/moz.build
accessible/ipc/other/ProxyAccessible.cpp
accessible/ipc/other/ProxyAccessible.h
accessible/ipc/other/moz.build
accessible/ipc/win/ProxyAccessible.cpp
accessible/ipc/win/ProxyAccessible.h
accessible/ipc/win/moz.build
accessible/windows/ProxyWrappers.h
accessible/xpcom/xpcAccessibleDocument.h
rename from accessible/ipc/ProxyAccessible.cpp
rename to accessible/ipc/ProxyAccessibleBase.cpp
--- a/accessible/ipc/ProxyAccessible.cpp
+++ b/accessible/ipc/ProxyAccessibleBase.cpp
@@ -1,74 +1,78 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set ts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#include "ProxyAccessible.h"
-#include "DocAccessibleParent.h"
 #include "DocAccessible.h"
+#include "mozilla/a11y/DocAccessibleParent.h"
 #include "mozilla/a11y/DocManager.h"
+#include "mozilla/a11y/Platform.h"
+#include "mozilla/a11y/ProxyAccessibleBase.h"
+#include "mozilla/a11y/ProxyAccessible.h"
+#include "mozilla/a11y/Role.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/TabParent.h"
 #include "mozilla/unused.h"
-#include "mozilla/a11y/Platform.h"
 #include "RelationType.h"
-#include "mozilla/a11y/Role.h"
 #include "xpcAccessibleDocument.h"
 
 namespace mozilla {
 namespace a11y {
 
+template <class Derived>
 void
-ProxyAccessible::Shutdown()
+ProxyAccessibleBase<Derived>::Shutdown()
 {
   MOZ_DIAGNOSTIC_ASSERT(!IsDoc());
   NS_ASSERTION(!mOuterDoc, "Why do we still have a child doc?");
   xpcAccessibleDocument* xpcDoc =
     GetAccService()->GetCachedXPCDocument(Document());
   if (xpcDoc) {
-    xpcDoc->NotifyOfShutdown(this);
+    xpcDoc->NotifyOfShutdown(static_cast<Derived*>(this));
   }
 
   // XXX Ideally  this wouldn't be necessary, but it seems OuterDoc accessibles
   // can be destroyed before the doc they own.
   if (!mOuterDoc) {
     uint32_t childCount = mChildren.Length();
     for (uint32_t idx = 0; idx < childCount; idx++)
       mChildren[idx]->Shutdown();
   } else {
     if (mChildren.Length() != 1)
       MOZ_CRASH("outer doc doesn't own adoc!");
 
     mChildren[0]->AsDoc()->Unbind();
   }
 
   mChildren.Clear();
-  ProxyDestroyed(this);
-  mDoc->RemoveAccessible(this);
+  ProxyDestroyed(static_cast<Derived*>(this));
+  mDoc->RemoveAccessible(static_cast<Derived*>(this));
 }
 
+template <class Derived>
 void
-ProxyAccessible::SetChildDoc(DocAccessibleParent* aParent)
+ProxyAccessibleBase<Derived>::SetChildDoc(DocAccessibleParent* aParent)
 {
   if (aParent) {
     MOZ_ASSERT(mChildren.IsEmpty());
     mChildren.AppendElement(aParent);
     mOuterDoc = true;
   } else {
     MOZ_ASSERT(mChildren.Length() == 1);
     mChildren.Clear();
     mOuterDoc = false;
   }
 }
 
+template <class Derived>
 bool
-ProxyAccessible::MustPruneChildren() const
+ProxyAccessibleBase<Derived>::MustPruneChildren() const
 {
   // this is the equivalent to nsAccUtils::MustPrune for proxies and should be
   // kept in sync with that.
   if (mRole != roles::MENUITEM && mRole != roles::COMBOBOX_OPTION
       && mRole != roles::OPTION && mRole != roles::ENTRY
       && mRole != roles::FLAT_EQUATION && mRole != roles::PASSWORD_TEXT
       && mRole != roles::PUSHBUTTON && mRole != roles::TOGGLE_BUTTON
       && mRole != roles::GRAPHIC && mRole != roles::SLIDER
@@ -77,998 +81,51 @@ ProxyAccessible::MustPruneChildren() con
 
   if (mChildren.Length() != 1)
     return false;
 
   return mChildren[0]->Role() == roles::TEXT_LEAF
     || mChildren[0]->Role() == roles::STATICTEXT;
 }
 
-uint64_t
-ProxyAccessible::State() const
-{
-  uint64_t state = 0;
-  Unused << mDoc->SendState(mID, &state);
-  return state;
-}
-
-uint64_t
-ProxyAccessible::NativeState() const
-{
-  uint64_t state = 0;
-  Unused << mDoc->SendNativeState(mID, &state);
-  return state;
-}
-
-void
-ProxyAccessible::Name(nsString& aName) const
-{
-  Unused << mDoc->SendName(mID, &aName);
-}
-
-void
-ProxyAccessible::Value(nsString& aValue) const
-{
-  Unused << mDoc->SendValue(mID, &aValue);
-}
-
-void
-ProxyAccessible::Help(nsString& aHelp) const
-{
-  Unused << mDoc->SendHelp(mID, &aHelp);
-}
-
-void
-ProxyAccessible::Description(nsString& aDesc) const
-{
-  Unused << mDoc->SendDescription(mID, &aDesc);
-}
-
-void
-ProxyAccessible::Attributes(nsTArray<Attribute> *aAttrs) const
-{
-  Unused << mDoc->SendAttributes(mID, aAttrs);
-}
-
-nsTArray<ProxyAccessible*>
-ProxyAccessible::RelationByType(RelationType aType) const
-{
-  nsTArray<uint64_t> targetIDs;
-  Unused << mDoc->SendRelationByType(mID, static_cast<uint32_t>(aType),
-                                     &targetIDs);
-
-  size_t targetCount = targetIDs.Length();
-  nsTArray<ProxyAccessible*> targets(targetCount);
-  for (size_t i = 0; i < targetCount; i++)
-    if (ProxyAccessible* proxy = mDoc->GetAccessible(targetIDs[i]))
-      targets.AppendElement(proxy);
-
-  return Move(targets);
-}
-
-void
-ProxyAccessible::Relations(nsTArray<RelationType>* aTypes,
-                           nsTArray<nsTArray<ProxyAccessible*>>* aTargetSets)
-  const
-{
-  nsTArray<RelationTargets> ipcRelations;
-  Unused << mDoc->SendRelations(mID, &ipcRelations);
-
-  size_t relationCount = ipcRelations.Length();
-  aTypes->SetCapacity(relationCount);
-  aTargetSets->SetCapacity(relationCount);
-  for (size_t i = 0; i < relationCount; i++) {
-    uint32_t type = ipcRelations[i].Type();
-    if (type > static_cast<uint32_t>(RelationType::LAST))
-      continue;
-
-    size_t targetCount = ipcRelations[i].Targets().Length();
-    nsTArray<ProxyAccessible*> targets(targetCount);
-    for (size_t j = 0; j < targetCount; j++)
-      if (ProxyAccessible* proxy = mDoc->GetAccessible(ipcRelations[i].Targets()[j]))
-        targets.AppendElement(proxy);
-
-    if (targets.IsEmpty())
-      continue;
-
-    aTargetSets->AppendElement(Move(targets));
-    aTypes->AppendElement(static_cast<RelationType>(type));
-  }
-}
-
-bool
-ProxyAccessible::IsSearchbox() const
-{
-  bool retVal = false;
-  Unused << mDoc->SendIsSearchbox(mID, &retVal);
-  return retVal;
-}
-
-nsIAtom*
-ProxyAccessible::LandmarkRole() const
-{
-  nsString landmark;
-  Unused << mDoc->SendLandmarkRole(mID, &landmark);
-  return NS_GetStaticAtom(landmark);
-}
-
-nsIAtom*
-ProxyAccessible::ARIARoleAtom() const
-{
-  nsString role;
-  Unused << mDoc->SendARIARoleAtom(mID, &role);
-  return NS_GetStaticAtom(role);
-}
-
-int32_t
-ProxyAccessible::GetLevelInternal()
-{
-  int32_t level = 0;
-  Unused << mDoc->SendGetLevelInternal(mID, &level);
-  return level;
-}
-
-void
-ProxyAccessible::ScrollTo(uint32_t aScrollType)
-{
-  Unused << mDoc->SendScrollTo(mID, aScrollType);
-}
-
-void
-ProxyAccessible::ScrollToPoint(uint32_t aScrollType, int32_t aX, int32_t aY)
-{
-  Unused << mDoc->SendScrollToPoint(mID, aScrollType, aX, aY);
-}
-
-int32_t
-ProxyAccessible::CaretLineNumber()
-{
-  int32_t line = -1;
-  Unused << mDoc->SendCaretOffset(mID, &line);
-  return line;
-}
-
-int32_t
-ProxyAccessible::CaretOffset()
-{
-  int32_t offset = 0;
-  Unused << mDoc->SendCaretOffset(mID, &offset);
-  return offset;
-}
-
-void
-ProxyAccessible::SetCaretOffset(int32_t aOffset)
-{
-  Unused << mDoc->SendSetCaretOffset(mID, aOffset);
-}
-
-int32_t
-ProxyAccessible::CharacterCount()
-{
-  int32_t count = 0;
-  Unused << mDoc->SendCharacterCount(mID, &count);
-  return count;
-}
-
-int32_t
-ProxyAccessible::SelectionCount()
-{
-  int32_t count = 0;
-  Unused << mDoc->SendSelectionCount(mID, &count);
-  return count;
-}
-
-bool
-ProxyAccessible::TextSubstring(int32_t aStartOffset, int32_t aEndOfset,
-                               nsString& aText) const
-{
-  bool valid;
-  Unused << mDoc->SendTextSubstring(mID, aStartOffset, aEndOfset, &aText, &valid);
-  return valid;
-}
-
-void
-ProxyAccessible::GetTextAfterOffset(int32_t aOffset,
-                                    AccessibleTextBoundary aBoundaryType,
-                                    nsString& aText, int32_t* aStartOffset,
-                                    int32_t* aEndOffset)
-{
-  Unused << mDoc->SendGetTextAfterOffset(mID, aOffset, aBoundaryType,
-                                         &aText, aStartOffset, aEndOffset);
-}
-
-void
-ProxyAccessible::GetTextAtOffset(int32_t aOffset,
-                                 AccessibleTextBoundary aBoundaryType,
-                                 nsString& aText, int32_t* aStartOffset,
-                                 int32_t* aEndOffset)
-{
-  Unused << mDoc->SendGetTextAtOffset(mID, aOffset, aBoundaryType,
-                                      &aText, aStartOffset, aEndOffset);
-}
-
-void
-ProxyAccessible::GetTextBeforeOffset(int32_t aOffset,
-                                     AccessibleTextBoundary aBoundaryType,
-                                     nsString& aText, int32_t* aStartOffset,
-                                     int32_t* aEndOffset)
-{
-  Unused << mDoc->SendGetTextBeforeOffset(mID, aOffset, aBoundaryType,
-                                          &aText, aStartOffset, aEndOffset);
-}
-
-char16_t
-ProxyAccessible::CharAt(int32_t aOffset)
-{
-  uint16_t retval = 0;
-  Unused << mDoc->SendCharAt(mID, aOffset, &retval);
-  return static_cast<char16_t>(retval);
-}
-
-void
-ProxyAccessible::TextAttributes(bool aIncludeDefAttrs,
-                                int32_t aOffset,
-                                nsTArray<Attribute>* aAttributes,
-                                int32_t* aStartOffset,
-                                int32_t* aEndOffset)
-{
-  Unused << mDoc->SendTextAttributes(mID, aIncludeDefAttrs, aOffset,
-                                     aAttributes, aStartOffset, aEndOffset);
-}
-
-void
-ProxyAccessible::DefaultTextAttributes(nsTArray<Attribute>* aAttrs)
-{
-  Unused << mDoc->SendDefaultTextAttributes(mID, aAttrs);
-}
-
-nsIntRect
-ProxyAccessible::TextBounds(int32_t aStartOffset, int32_t aEndOffset,
-                            uint32_t aCoordType)
-{
-  nsIntRect rect;
-  Unused <<
-    mDoc->SendTextBounds(mID, aStartOffset, aEndOffset, aCoordType, &rect);
-  return rect;
-}
-
-nsIntRect
-ProxyAccessible::CharBounds(int32_t aOffset, uint32_t aCoordType)
-{
-  nsIntRect rect;
-  Unused <<
-    mDoc->SendCharBounds(mID, aOffset, aCoordType, &rect);
-  return rect;
-}
-
-int32_t
-ProxyAccessible::OffsetAtPoint(int32_t aX, int32_t aY, uint32_t aCoordType)
-{
-  int32_t retVal = -1;
-  Unused << mDoc->SendOffsetAtPoint(mID, aX, aY, aCoordType, &retVal);
-  return retVal;
-}
-
-bool
-ProxyAccessible::SelectionBoundsAt(int32_t aSelectionNum,
-                                   nsString& aData,
-                                   int32_t* aStartOffset,
-                                   int32_t* aEndOffset)
-{
-  bool retVal = false;
-  Unused << mDoc->SendSelectionBoundsAt(mID, aSelectionNum, &retVal, &aData,
-                                        aStartOffset, aEndOffset);
-  return retVal;
-}
-
-bool
-ProxyAccessible::SetSelectionBoundsAt(int32_t aSelectionNum,
-                                      int32_t aStartOffset,
-                                      int32_t aEndOffset)
-{
-  bool retVal = false;
-  Unused << mDoc->SendSetSelectionBoundsAt(mID, aSelectionNum, aStartOffset,
-                                           aEndOffset, &retVal);
-  return retVal;
-}
-
-bool
-ProxyAccessible::AddToSelection(int32_t aStartOffset,
-                                int32_t aEndOffset)
-{
-  bool retVal = false;
-  Unused << mDoc->SendAddToSelection(mID, aStartOffset, aEndOffset, &retVal);
-  return retVal;
-}
-
-bool
-ProxyAccessible::RemoveFromSelection(int32_t aSelectionNum)
-{
-  bool retVal = false;
-  Unused << mDoc->SendRemoveFromSelection(mID, aSelectionNum, &retVal);
-  return retVal;
-}
-
-void
-ProxyAccessible::ScrollSubstringTo(int32_t aStartOffset, int32_t aEndOffset,
-                                   uint32_t aScrollType)
-{
-  Unused << mDoc->SendScrollSubstringTo(mID, aStartOffset, aEndOffset, aScrollType);
-}
-
-void
-ProxyAccessible::ScrollSubstringToPoint(int32_t aStartOffset,
-                                        int32_t aEndOffset,
-                                        uint32_t aCoordinateType,
-                                        int32_t aX, int32_t aY)
-{
-  Unused << mDoc->SendScrollSubstringToPoint(mID, aStartOffset, aEndOffset,
-                                             aCoordinateType, aX, aY);
-}
-
-void
-ProxyAccessible::Text(nsString* aText)
-{
-  Unused << mDoc->SendText(mID, aText);
-}
-
-void
-ProxyAccessible::ReplaceText(const nsString& aText)
-{
-  Unused << mDoc->SendReplaceText(mID, aText);
-}
-
-bool
-ProxyAccessible::InsertText(const nsString& aText, int32_t aPosition)
-{
-  bool valid;
-  Unused << mDoc->SendInsertText(mID, aText, aPosition, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::CopyText(int32_t aStartPos, int32_t aEndPos)
-{
-  bool valid;
-  Unused << mDoc->SendCopyText(mID, aStartPos, aEndPos, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::CutText(int32_t aStartPos, int32_t aEndPos)
-{
-  bool valid;
-  Unused << mDoc->SendCutText(mID, aStartPos, aEndPos, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::DeleteText(int32_t aStartPos, int32_t aEndPos)
-{
-  bool valid;
-  Unused << mDoc->SendDeleteText(mID, aStartPos, aEndPos, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::PasteText(int32_t aPosition)
-{
-  bool valid;
-  Unused << mDoc->SendPasteText(mID, aPosition, &valid);
-  return valid;
-}
-
-nsIntPoint
-ProxyAccessible::ImagePosition(uint32_t aCoordType)
-{
-  nsIntPoint retVal;
-  Unused << mDoc->SendImagePosition(mID, aCoordType, &retVal);
-  return retVal;
-}
-
-nsIntSize
-ProxyAccessible::ImageSize()
-{
-  nsIntSize retVal;
-  Unused << mDoc->SendImageSize(mID, &retVal);
-  return retVal;
-}
-
-uint32_t
-ProxyAccessible::StartOffset(bool* aOk)
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendStartOffset(mID, &retVal, aOk);
-  return retVal;
-}
-
-uint32_t
-ProxyAccessible::EndOffset(bool* aOk)
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendEndOffset(mID, &retVal, aOk);
-  return retVal;
-}
-
-bool
-ProxyAccessible::IsLinkValid()
-{
-  bool retVal = false;
-  Unused << mDoc->SendIsLinkValid(mID, &retVal);
-  return retVal;
-}
-
-uint32_t
-ProxyAccessible::AnchorCount(bool* aOk)
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendAnchorCount(mID, &retVal, aOk);
-  return retVal;
-}
-
-void
-ProxyAccessible::AnchorURIAt(uint32_t aIndex, nsCString& aURI, bool* aOk)
-{
-  Unused << mDoc->SendAnchorURIAt(mID, aIndex, &aURI, aOk);
-}
-
-ProxyAccessible*
-ProxyAccessible::AnchorAt(uint32_t aIndex)
-{
-  uint64_t id = 0;
-  bool ok = false;
-  Unused << mDoc->SendAnchorAt(mID, aIndex, &id, &ok);
-  return ok ? mDoc->GetAccessible(id) : nullptr;
-}
-
+template <class Derived>
 uint32_t
-ProxyAccessible::LinkCount()
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendLinkCount(mID, &retVal);
-  return retVal;
-}
-
-ProxyAccessible*
-ProxyAccessible::LinkAt(const uint32_t& aIndex)
-{
-  uint64_t linkID = 0;
-  bool ok = false;
-  Unused << mDoc->SendLinkAt(mID, aIndex, &linkID, &ok);
-  return ok ? mDoc->GetAccessible(linkID) : nullptr;
-}
-
-int32_t
-ProxyAccessible::LinkIndexOf(ProxyAccessible* aLink)
-{
-  int32_t retVal = -1;
-  if (aLink) {
-    Unused << mDoc->SendLinkIndexOf(mID, aLink->ID(), &retVal);
-  }
-
-  return retVal;
-}
-
-int32_t
-ProxyAccessible::LinkIndexAtOffset(uint32_t aOffset)
-{
-  int32_t retVal = -1;
-  Unused << mDoc->SendLinkIndexAtOffset(mID, aOffset, &retVal);
-  return retVal;
-}
-
-ProxyAccessible*
-ProxyAccessible::TableOfACell()
-{
-  uint64_t tableID = 0;
-  bool ok = false;
-  Unused << mDoc->SendTableOfACell(mID, &tableID, &ok);
-  return ok ? mDoc->GetAccessible(tableID) : nullptr;
-}
-
-uint32_t
-ProxyAccessible::ColIdx()
-{
-  uint32_t index = 0;
-  Unused << mDoc->SendColIdx(mID, &index);
-  return index;
-}
-
-uint32_t
-ProxyAccessible::RowIdx()
-{
-  uint32_t index = 0;
-  Unused << mDoc->SendRowIdx(mID, &index);
-  return index;
-}
-
-uint32_t
-ProxyAccessible::ColExtent()
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendColExtent(mID, &extent);
-  return extent;
-}
-
-uint32_t
-ProxyAccessible::RowExtent()
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendRowExtent(mID, &extent);
-  return extent;
-}
-
-void
-ProxyAccessible::ColHeaderCells(nsTArray<ProxyAccessible*>* aCells)
-{
-  nsTArray<uint64_t> targetIDs;
-  Unused << mDoc->SendColHeaderCells(mID, &targetIDs);
-
-  size_t targetCount = targetIDs.Length();
-  for (size_t i = 0; i < targetCount; i++) {
-    aCells->AppendElement(mDoc->GetAccessible(targetIDs[i]));
-  }
-}
-
-void
-ProxyAccessible::RowHeaderCells(nsTArray<ProxyAccessible*>* aCells)
-{
-  nsTArray<uint64_t> targetIDs;
-  Unused << mDoc->SendRowHeaderCells(mID, &targetIDs);
-
-  size_t targetCount = targetIDs.Length();
-  for (size_t i = 0; i < targetCount; i++) {
-    aCells->AppendElement(mDoc->GetAccessible(targetIDs[i]));
-  }
-}
-
-bool
-ProxyAccessible::IsCellSelected()
-{
-  bool selected = false;
-  Unused << mDoc->SendIsCellSelected(mID, &selected);
-  return selected;
-}
-
-ProxyAccessible*
-ProxyAccessible::TableCaption()
-{
-  uint64_t captionID = 0;
-  bool ok = false;
-  Unused << mDoc->SendTableCaption(mID, &captionID, &ok);
-  return ok ? mDoc->GetAccessible(captionID) : nullptr;
-}
-
-void
-ProxyAccessible::TableSummary(nsString& aSummary)
-{
-  Unused << mDoc->SendTableSummary(mID, &aSummary);
-}
-
-uint32_t
-ProxyAccessible::TableColumnCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableColumnCount(mID, &count);
-  return count;
-}
-
-uint32_t
-ProxyAccessible::TableRowCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableRowCount(mID, &count);
-  return count;
-}
-
-ProxyAccessible*
-ProxyAccessible::TableCellAt(uint32_t aRow, uint32_t aCol)
-{
-  uint64_t cellID = 0;
-  bool ok = false;
-  Unused << mDoc->SendTableCellAt(mID, aRow, aCol, &cellID, &ok);
-  return ok ? mDoc->GetAccessible(cellID) : nullptr;
-}
-
-int32_t
-ProxyAccessible::TableCellIndexAt(uint32_t aRow, uint32_t aCol)
-{
-  int32_t index = 0;
-  Unused << mDoc->SendTableCellIndexAt(mID, aRow, aCol, &index);
-  return index;
-}
-
-int32_t
-ProxyAccessible::TableColumnIndexAt(uint32_t aCellIndex)
-{
-  int32_t index = 0;
-  Unused << mDoc->SendTableColumnIndexAt(mID, aCellIndex, &index);
-  return index;
-}
-
-int32_t
-ProxyAccessible::TableRowIndexAt(uint32_t aCellIndex)
-{
-  int32_t index = 0;
-  Unused << mDoc->SendTableRowIndexAt(mID, aCellIndex, &index);
-  return index;
-}
-
-void
-ProxyAccessible::TableRowAndColumnIndicesAt(uint32_t aCellIndex,
-                                            int32_t* aRow, int32_t* aCol)
-{
-  Unused << mDoc->SendTableRowAndColumnIndicesAt(mID, aCellIndex, aRow, aCol);
-}
-
-uint32_t
-ProxyAccessible::TableColumnExtentAt(uint32_t aRow, uint32_t aCol)
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendTableColumnExtentAt(mID, aRow, aCol, &extent);
-  return extent;
-}
-
-uint32_t
-ProxyAccessible::TableRowExtentAt(uint32_t aRow, uint32_t aCol)
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendTableRowExtentAt(mID, aRow, aCol, &extent);
-  return extent;
-}
-
-void
-ProxyAccessible::TableColumnDescription(uint32_t aCol, nsString& aDescription)
-{
-  Unused << mDoc->SendTableColumnDescription(mID, aCol, &aDescription);
-}
-
-void
-ProxyAccessible::TableRowDescription(uint32_t aRow, nsString& aDescription)
-{
-  Unused << mDoc->SendTableRowDescription(mID, aRow, &aDescription);
-}
-
-bool
-ProxyAccessible::TableColumnSelected(uint32_t aCol)
-{
-  bool selected = false;
-  Unused << mDoc->SendTableColumnSelected(mID, aCol, &selected);
-  return selected;
-}
-
-bool
-ProxyAccessible::TableRowSelected(uint32_t aRow)
-{
-  bool selected = false;
-  Unused << mDoc->SendTableRowSelected(mID, aRow, &selected);
-  return selected;
-}
-
-bool
-ProxyAccessible::TableCellSelected(uint32_t aRow, uint32_t aCol)
-{
-  bool selected = false;
-  Unused << mDoc->SendTableCellSelected(mID, aRow, aCol, &selected);
-  return selected;
-}
-
-uint32_t
-ProxyAccessible::TableSelectedCellCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableSelectedCellCount(mID, &count);
-  return count;
-}
-
-uint32_t
-ProxyAccessible::TableSelectedColumnCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableSelectedColumnCount(mID, &count);
-  return count;
-}
-
-uint32_t
-ProxyAccessible::TableSelectedRowCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableSelectedRowCount(mID, &count);
-  return count;
-}
-
-void
-ProxyAccessible::TableSelectedCells(nsTArray<ProxyAccessible*>* aCellIDs)
-{
-  AutoTArray<uint64_t, 30> cellIDs;
-  Unused << mDoc->SendTableSelectedCells(mID, &cellIDs);
-  aCellIDs->SetCapacity(cellIDs.Length());
-  for (uint32_t i = 0; i < cellIDs.Length(); ++i) {
-    aCellIDs->AppendElement(mDoc->GetAccessible(cellIDs[i]));
-  }
-}
-
-void
-ProxyAccessible::TableSelectedCellIndices(nsTArray<uint32_t>* aCellIndices)
-{
-  Unused << mDoc->SendTableSelectedCellIndices(mID, aCellIndices);
-}
-
-void
-ProxyAccessible::TableSelectedColumnIndices(nsTArray<uint32_t>* aColumnIndices)
-{
-  Unused << mDoc->SendTableSelectedColumnIndices(mID, aColumnIndices);
-}
-
-void
-ProxyAccessible::TableSelectedRowIndices(nsTArray<uint32_t>* aRowIndices)
-{
-  Unused << mDoc->SendTableSelectedRowIndices(mID, aRowIndices);
-}
-
-void
-ProxyAccessible::TableSelectColumn(uint32_t aCol)
-{
-  Unused << mDoc->SendTableSelectColumn(mID, aCol);
-}
-
-void
-ProxyAccessible::TableSelectRow(uint32_t aRow)
-{
-  Unused << mDoc->SendTableSelectRow(mID, aRow);
-}
-
-void
-ProxyAccessible::TableUnselectColumn(uint32_t aCol)
-{
-  Unused << mDoc->SendTableUnselectColumn(mID, aCol);
-}
-
-void
-ProxyAccessible::TableUnselectRow(uint32_t aRow)
-{
-  Unused << mDoc->SendTableUnselectRow(mID, aRow);
-}
-
-bool
-ProxyAccessible::TableIsProbablyForLayout()
-{
-  bool forLayout = false;
-  Unused << mDoc->SendTableIsProbablyForLayout(mID, &forLayout);
-  return forLayout;
-}
-
-ProxyAccessible*
-ProxyAccessible::AtkTableColumnHeader(int32_t aCol)
-{
-  uint64_t headerID = 0;
-  bool ok = false;
-  Unused << mDoc->SendAtkTableColumnHeader(mID, aCol, &headerID, &ok);
-  return ok ? mDoc->GetAccessible(headerID) : nullptr;
-}
-
-ProxyAccessible*
-ProxyAccessible::AtkTableRowHeader(int32_t aRow)
-{
-  uint64_t headerID = 0;
-  bool ok = false;
-  Unused << mDoc->SendAtkTableRowHeader(mID, aRow, &headerID, &ok);
-  return ok ? mDoc->GetAccessible(headerID) : nullptr;
-}
-
-void
-ProxyAccessible::SelectedItems(nsTArray<ProxyAccessible*>* aSelectedItems)
-{
-  AutoTArray<uint64_t, 10> itemIDs;
-  Unused << mDoc->SendSelectedItems(mID, &itemIDs);
-  aSelectedItems->SetCapacity(itemIDs.Length());
-  for (size_t i = 0; i < itemIDs.Length(); ++i) {
-    aSelectedItems->AppendElement(mDoc->GetAccessible(itemIDs[i]));
-  }
-}
-
-uint32_t
-ProxyAccessible::SelectedItemCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendSelectedItemCount(mID, &count);
-  return count;
-}
-
-ProxyAccessible*
-ProxyAccessible::GetSelectedItem(uint32_t aIndex)
-{
-  uint64_t selectedItemID = 0;
-  bool ok = false;
-  Unused << mDoc->SendGetSelectedItem(mID, aIndex, &selectedItemID, &ok);
-  return ok ? mDoc->GetAccessible(selectedItemID) : nullptr;
-}
-
-bool
-ProxyAccessible::IsItemSelected(uint32_t aIndex)
-{
-  bool selected = false;
-  Unused << mDoc->SendIsItemSelected(mID, aIndex, &selected);
-  return selected;
-}
- 
-bool
-ProxyAccessible::AddItemToSelection(uint32_t aIndex)
-{
-  bool success = false;
-  Unused << mDoc->SendAddItemToSelection(mID, aIndex, &success);
-  return success;
-}
-
-bool
-ProxyAccessible::RemoveItemFromSelection(uint32_t aIndex)
-{
-  bool success = false;
-  Unused << mDoc->SendRemoveItemFromSelection(mID, aIndex, &success);
-  return success;
-}
-
-bool
-ProxyAccessible::SelectAll()
-{
-  bool success = false;
-  Unused << mDoc->SendSelectAll(mID, &success);
-  return success;
-}
-
-bool
-ProxyAccessible::UnselectAll()
-{
-  bool success = false;
-  Unused << mDoc->SendUnselectAll(mID, &success);
-  return success;
-}
-
-void
-ProxyAccessible::TakeSelection()
-{
-  Unused << mDoc->SendTakeSelection(mID);
-}
-
-void
-ProxyAccessible::SetSelected(bool aSelect)
-{
-  Unused << mDoc->SendSetSelected(mID, aSelect);
-}
-
-bool
-ProxyAccessible::DoAction(uint8_t aIndex)
-{
-  bool success = false;
-  Unused << mDoc->SendDoAction(mID, aIndex, &success);
-  return success;
-}
-
-uint8_t
-ProxyAccessible::ActionCount()
-{
-  uint8_t count = 0;
-  Unused << mDoc->SendActionCount(mID, &count);
-  return count;
-}
-
-void
-ProxyAccessible::ActionDescriptionAt(uint8_t aIndex, nsString& aDescription)
-{
-  Unused << mDoc->SendActionDescriptionAt(mID, aIndex, &aDescription);
-}
-
-void
-ProxyAccessible::ActionNameAt(uint8_t aIndex, nsString& aName)
-{
-  Unused << mDoc->SendActionNameAt(mID, aIndex, &aName);
-}
-
-KeyBinding
-ProxyAccessible::AccessKey()
-{
-  uint32_t key = 0;
-  uint32_t modifierMask = 0;
-  Unused << mDoc->SendAccessKey(mID, &key, &modifierMask);
-  return KeyBinding(key, modifierMask);
-}
-
-KeyBinding
-ProxyAccessible::KeyboardShortcut()
-{
-  uint32_t key = 0;
-  uint32_t modifierMask = 0;
-  Unused << mDoc->SendKeyboardShortcut(mID, &key, &modifierMask);
-  return KeyBinding(key, modifierMask);
-}
-
-void
-ProxyAccessible::AtkKeyBinding(nsString& aBinding)
-{
-  Unused << mDoc->SendAtkKeyBinding(mID, &aBinding);
-}
-
-double
-ProxyAccessible::CurValue()
-{
-  double val = UnspecifiedNaN<double>();
-  Unused << mDoc->SendCurValue(mID, &val);
-  return val;
-}
-
-bool
-ProxyAccessible::SetCurValue(double aValue)
-{
-  bool success = false;
-  Unused << mDoc->SendSetCurValue(mID, aValue, &success);
-  return success;
-}
-
-double
-ProxyAccessible::MinValue()
-{
-  double val = UnspecifiedNaN<double>();
-  Unused << mDoc->SendMinValue(mID, &val);
-  return val;
-}
-
-double
-ProxyAccessible::MaxValue()
-{
-  double val = UnspecifiedNaN<double>();
-  Unused << mDoc->SendMaxValue(mID, &val);
-  return val;
-}
-
-double
-ProxyAccessible::Step()
-{
-  double step = UnspecifiedNaN<double>();
-  Unused << mDoc->SendStep(mID, &step);
-  return step;
-}
-
-void
-ProxyAccessible::TakeFocus()
-{
-  Unused << mDoc->SendTakeFocus(mID);
-}
-
-uint32_t
-ProxyAccessible::EmbeddedChildCount() const
+ProxyAccessibleBase<Derived>::EmbeddedChildCount() const
 {
   size_t count = 0, kids = mChildren.Length();
   for (size_t i = 0; i < kids; i++) {
     if (mChildren[i]->IsEmbeddedObject()) {
       count++;
     }
   }
 
   return count;
 }
 
+template <class Derived>
 int32_t
-ProxyAccessible::IndexOfEmbeddedChild(const ProxyAccessible* aChild)
+ProxyAccessibleBase<Derived>::IndexOfEmbeddedChild(const Derived* aChild)
 {
   size_t index = 0, kids = mChildren.Length();
   for (size_t i = 0; i < kids; i++) {
     if (mChildren[i]->IsEmbeddedObject()) {
       if (mChildren[i] == aChild) {
         return index;
       }
 
       index++;
     }
   }
 
   return -1;
 }
 
-ProxyAccessible*
-ProxyAccessible::EmbeddedChildAt(size_t aChildIdx)
+template <class Derived>
+Derived*
+ProxyAccessibleBase<Derived>::EmbeddedChildAt(size_t aChildIdx)
 {
   size_t index = 0, kids = mChildren.Length();
   for (size_t i = 0; i < kids; i++) {
     if (!mChildren[i]->IsEmbeddedObject()) {
       continue;
     }
 
     if (index == aChildIdx) {
@@ -1076,117 +133,27 @@ ProxyAccessible::EmbeddedChildAt(size_t 
     }
 
     index++;
   }
 
   return nullptr;
 }
 
-ProxyAccessible*
-ProxyAccessible::FocusedChild()
-{
-  uint64_t childID = 0;
-  bool ok = false;
-  Unused << mDoc->SendFocusedChild(mID, &childID, &ok);
-  return ok ? mDoc->GetAccessible(childID) : nullptr;
-}
-
-ProxyAccessible*
-ProxyAccessible::ChildAtPoint(int32_t aX, int32_t aY,
-                              Accessible::EWhichChildAtPoint aWhichChild)
-{
-  uint64_t childID = 0;
-  bool ok = false;
-  Unused << mDoc->SendAccessibleAtPoint(mID, aX, aY, false,
-                                        static_cast<uint32_t>(aWhichChild),
-                                        &childID, &ok);
-  return ok ? mDoc->GetAccessible(childID) : nullptr;
-}
-
-nsIntRect
-ProxyAccessible::Bounds()
-{
-  nsIntRect rect;
-  Unused << mDoc->SendExtents(mID, false,
-                              &(rect.x), &(rect.y),
-                              &(rect.width), &(rect.height));
-  return rect;
-}
-
-void
-ProxyAccessible::Language(nsString& aLocale)
-{
-  Unused << mDoc->SendLanguage(mID, &aLocale);
-}
-
-void
-ProxyAccessible::DocType(nsString& aType)
-{
-  Unused << mDoc->SendDocType(mID, &aType);
-}
-
-void
-ProxyAccessible::Title(nsString& aTitle)
-{
-  Unused << mDoc->SendTitle(mID, &aTitle);
-}
-
-void
-ProxyAccessible::URL(nsString& aURL)
-{
-  Unused << mDoc->SendURL(mID, &aURL);
-}
-
-void
-ProxyAccessible::MimeType(nsString aMime)
-{
-  Unused << mDoc->SendMimeType(mID, &aMime);
-}
-
-void
-ProxyAccessible::URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
-                                    nsString& aMimeType)
-{
-  Unused << mDoc->SendURLDocTypeMimeType(mID, &aURL, &aDocType, &aMimeType);
-}
-
-ProxyAccessible*
-ProxyAccessible::AccessibleAtPoint(int32_t aX, int32_t aY,
-                                   bool aNeedsScreenCoords)
-{
-  uint64_t childID = 0;
-  bool ok = false;
-  Unused <<
-    mDoc->SendAccessibleAtPoint(mID, aX, aY, aNeedsScreenCoords,
-                                static_cast<uint32_t>(Accessible::eDirectChild),
-                                &childID, &ok);
-  return ok ? mDoc->GetAccessible(childID) : nullptr;
-}
-
-void
-ProxyAccessible::Extents(bool aNeedsScreenCoords, int32_t* aX, int32_t* aY,
-                        int32_t* aWidth, int32_t* aHeight)
-{
-  Unused << mDoc->SendExtents(mID, aNeedsScreenCoords, aX, aY, aWidth, aHeight);
-}
-
-void
-ProxyAccessible::DOMNodeID(nsString& aID)
-{
-  Unused << mDoc->SendDOMNodeID(mID, &aID);
-}
-
+template <class Derived>
 Accessible*
-ProxyAccessible::OuterDocOfRemoteBrowser() const
+ProxyAccessibleBase<Derived>::OuterDocOfRemoteBrowser() const
 {
   auto tab = static_cast<dom::TabParent*>(mDoc->Manager());
   dom::Element* frame = tab->GetOwnerElement();
   NS_ASSERTION(frame, "why isn't the tab in a frame!");
   if (!frame)
     return nullptr;
 
   DocAccessible* chromeDoc = GetExistingDocAccessible(frame->OwnerDoc());
 
   return chromeDoc ? chromeDoc->GetAccessible(frame) : nullptr;
 }
-}
-}
+
+template class ProxyAccessibleBase<ProxyAccessible>;
+
+} // namespace a11y
+} // namespace mozilla
rename from accessible/ipc/ProxyAccessible.h
rename to accessible/ipc/ProxyAccessibleBase.h
--- a/accessible/ipc/ProxyAccessible.h
+++ b/accessible/ipc/ProxyAccessibleBase.h
@@ -1,109 +1,116 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set ts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-#ifndef mozilla_a11y_ProxyAccessible_h
-#define mozilla_a11y_ProxyAccessible_h
+#ifndef mozilla_a11y_ProxyAccessibleBase_h
+#define mozilla_a11y_ProxyAccessibleBase_h
 
 #include "mozilla/a11y/Role.h"
 #include "nsIAccessibleText.h"
 #include "nsIAccessibleTypes.h"
 #include "Accessible.h"
 #include "nsString.h"
 #include "nsTArray.h"
 #include "nsRect.h"
 #include "Accessible.h"
 
 namespace mozilla {
 namespace a11y {
 
 class Accessible;
 class Attribute;
 class DocAccessibleParent;
+class ProxyAccessible;
 enum class RelationType;
 
 enum Interfaces
 {
   HYPERTEXT = 1,
   HYPERLINK = 1 << 1,
   IMAGE = 1 << 2,
   VALUE = 1 << 3,
   TABLE = 1 << 4,
   TABLECELL = 1 << 5,
   DOCUMENT = 1 << 6,
   SELECTION = 1 << 7,
   ACTION = 1 << 8,
 };
 
-class ProxyAccessible
+template <class Derived>
+class ProxyAccessibleBase
 {
 public:
+  ProxyAccessibleBase(uint64_t aID, Derived* aParent,
+                      DocAccessibleParent* aDoc, role aRole,
+                      uint32_t aInterfaces)
+    : mParent(aParent)
+    , mDoc(aDoc)
+    , mWrapper(0)
+    , mID(aID)
+    , mRole(aRole)
+    , mOuterDoc(false)
+    , mIsDoc(false)
+    , mHasValue(aInterfaces & Interfaces::VALUE)
+    , mIsHyperLink(aInterfaces & Interfaces::HYPERLINK)
+    , mIsHyperText(aInterfaces & Interfaces::HYPERTEXT)
+  {
+  }
 
-  ProxyAccessible(uint64_t aID, ProxyAccessible* aParent,
-                  DocAccessibleParent* aDoc, role aRole, uint32_t aInterfaces) :
-     mParent(aParent), mDoc(aDoc), mWrapper(0), mID(aID), mRole(aRole),
-     mOuterDoc(false), mIsDoc(false),
-     mHasValue(aInterfaces & Interfaces::VALUE),
-     mIsHyperLink(aInterfaces & Interfaces::HYPERLINK),
-     mIsHyperText(aInterfaces & Interfaces::HYPERTEXT)
+  ~ProxyAccessibleBase()
   {
-    MOZ_COUNT_CTOR(ProxyAccessible);
-  }
-  ~ProxyAccessible()
-  {
-    MOZ_COUNT_DTOR(ProxyAccessible);
     MOZ_ASSERT(!mWrapper);
   }
 
-  void AddChildAt(uint32_t aIdx, ProxyAccessible* aChild)
+  void AddChildAt(uint32_t aIdx, Derived* aChild)
   { mChildren.InsertElementAt(aIdx, aChild); }
 
   uint32_t ChildrenCount() const { return mChildren.Length(); }
-  ProxyAccessible* ChildAt(uint32_t aIdx) const { return mChildren[aIdx]; }
-  ProxyAccessible* FirstChild() const
+  Derived* ChildAt(uint32_t aIdx) const { return mChildren[aIdx]; }
+  Derived* FirstChild() const
     { return mChildren.Length() ? mChildren[0] : nullptr; }
-  ProxyAccessible* LastChild() const
+  Derived* LastChild() const
     { return mChildren.Length() ? mChildren[mChildren.Length() - 1] : nullptr; }
-  ProxyAccessible* PrevSibling() const
+  Derived* PrevSibling() const
   {
     size_t idx = IndexInParent();
     return idx > 0 ? Parent()->mChildren[idx - 1] : nullptr;
   }
-  ProxyAccessible* NextSibling() const
+  Derived* NextSibling() const
   {
     size_t idx = IndexInParent();
     return idx + 1 < Parent()->mChildren.Length() ? Parent()->mChildren[idx + 1]
     : nullptr;
   }
 
   // XXX evaluate if this is fast enough.
-  size_t IndexInParent() const { return Parent()->mChildren.IndexOf(this); }
+  size_t IndexInParent() const { return
+    Parent()->mChildren.IndexOf(static_cast<const Derived*>(this)); }
   uint32_t EmbeddedChildCount() const;
-  int32_t IndexOfEmbeddedChild(const ProxyAccessible*);
-  ProxyAccessible* EmbeddedChildAt(size_t aChildIdx);
+  int32_t IndexOfEmbeddedChild(const Derived* aChild);
+  Derived* EmbeddedChildAt(size_t aChildIdx);
   bool MustPruneChildren() const;
 
   void Shutdown();
 
   void SetChildDoc(DocAccessibleParent*);
 
   /**
    * Remove The given child.
    */
-  void RemoveChild(ProxyAccessible* aChild)
+  void RemoveChild(Derived* aChild)
     { mChildren.RemoveElement(aChild); }
 
   /**
    * Return the proxy for the parent of the wrapped accessible.
    */
-  ProxyAccessible* Parent() const { return mParent; }
+  Derived* Parent() const { return mParent; }
 
   Accessible* OuterDocOfRemoteBrowser() const;
 
   /**
    * Get the role of the accessible we're proxying.
    */
   role Role() const { return mRole; }
 
@@ -113,294 +120,16 @@ public:
   bool IsEmbeddedObject() const
   {
     role role = Role();
     return role != roles::TEXT_LEAF &&
            role != roles::WHITESPACE &&
            role != roles::STATICTEXT;
   }
 
-  /*
-   * Return the states for the proxied accessible.
-   */
-  uint64_t State() const;
-
-  /*
-   * Return the native states for the proxied accessible.
-   */
-  uint64_t NativeState() const;
-
-  /*
-   * Set aName to the name of the proxied accessible.
-   */
-  void Name(nsString& aName) const;
-
-  /*
-   * Set aValue to the value of the proxied accessible.
-   */
-  void Value(nsString& aValue) const;
-
-  /*
-   * Set aHelp to the help string of the proxied accessible.
-   */
-  void Help(nsString& aHelp) const;
-
-  /**
-   * Set aDesc to the description of the proxied accessible.
-   */
-  void Description(nsString& aDesc) const;
-
-  /**
-   * Get the set of attributes on the proxied accessible.
-   */
-  void Attributes(nsTArray<Attribute> *aAttrs) const;
-
-  /**
-   * Return set of targets of given relation type.
-   */
-  nsTArray<ProxyAccessible*> RelationByType(RelationType aType) const;
-
-  /**
-   * Get all relations for this accessible.
-   */
-  void Relations(nsTArray<RelationType>* aTypes,
-                 nsTArray<nsTArray<ProxyAccessible*>>* aTargetSets) const;
-
-  bool IsSearchbox() const;
-
-  nsIAtom* LandmarkRole() const;
-
-  nsIAtom* ARIARoleAtom() const;
-
-  int32_t GetLevelInternal();
-  void ScrollTo(uint32_t aScrollType);
-  void ScrollToPoint(uint32_t aScrollType, int32_t aX, int32_t aY);
-
-  int32_t CaretLineNumber();
-  int32_t CaretOffset();
-  void SetCaretOffset(int32_t aOffset);
-
-  int32_t CharacterCount();
-  int32_t SelectionCount();
-
-  /**
-   * Get the text between the given offsets.
-   */
-  bool TextSubstring(int32_t aStartOffset, int32_t aEndOfset,
-                     nsString& aText) const;
-
-  void GetTextAfterOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
-                          nsString& aText, int32_t* aStartOffset,
-                          int32_t* aEndOffset);
-
-  void GetTextAtOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
-                       nsString& aText, int32_t* aStartOffset,
-                       int32_t* aEndOffset);
-
-  void GetTextBeforeOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
-                           nsString& aText, int32_t* aStartOffset,
-                           int32_t* aEndOffset);
-
-  char16_t CharAt(int32_t aOffset);
-
-  void TextAttributes(bool aIncludeDefAttrs,
-                      const int32_t aOffset,
-                      nsTArray<Attribute>* aAttributes,
-                      int32_t* aStartOffset,
-                      int32_t* aEndOffset);
-  void DefaultTextAttributes(nsTArray<Attribute>* aAttrs);
-
-  nsIntRect TextBounds(int32_t aStartOffset, int32_t aEndOffset,
-                       uint32_t aCoordType = nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE);
-
-  nsIntRect CharBounds(int32_t aOffset, uint32_t aCoordType);
-
-  int32_t OffsetAtPoint(int32_t aX, int32_t aY, uint32_t aCoordType);
-
-  bool SelectionBoundsAt(int32_t aSelectionNum,
-                         nsString& aData,
-                         int32_t* aStartOffset,
-                         int32_t* aEndOffset);
-
-  bool SetSelectionBoundsAt(int32_t aSelectionNum,
-                            int32_t aStartOffset,
-                            int32_t aEndOffset);
-
-  bool AddToSelection(int32_t aStartOffset,
-                      int32_t aEndOffset);
-
-  bool RemoveFromSelection(int32_t aSelectionNum);
-
-  void ScrollSubstringTo(int32_t aStartOffset, int32_t aEndOffset,
-                         uint32_t aScrollType);
-
-  void ScrollSubstringToPoint(int32_t aStartOffset,
-                              int32_t aEndOffset,
-                              uint32_t aCoordinateType,
-                              int32_t aX, int32_t aY);
-
-  void Text(nsString* aText);
-
-  void ReplaceText(const nsString& aText);
-
-  bool InsertText(const nsString& aText, int32_t aPosition);
-
-  bool CopyText(int32_t aStartPos, int32_t aEndPos);
-
-  bool CutText(int32_t aStartPos, int32_t aEndPos);
-
-  bool DeleteText(int32_t aStartPos, int32_t aEndPos);
-
-  bool PasteText(int32_t aPosition);
-
-  nsIntPoint ImagePosition(uint32_t aCoordType);
-
-  nsIntSize ImageSize();
-
-  uint32_t StartOffset(bool* aOk);
-
-  uint32_t EndOffset(bool* aOk);
-
-  bool IsLinkValid();
-
-  // XXX checking mRole alone may not result in same behavior as Accessibles
-  // due to ARIA roles. See bug 1210477.
-  inline bool IsTable() const
-  {
-    return mRole == roles::TABLE || mRole == roles::MATHML_TABLE;
-  }
-  inline bool IsTableRow() const
-  {
-    return (mRole == roles::ROW ||
-            mRole == roles::MATHML_TABLE_ROW ||
-            mRole == roles::MATHML_LABELED_ROW);
-  }
-  inline bool IsTableCell() const
-  {
-    return (mRole == roles::CELL ||
-            mRole == roles::COLUMNHEADER ||
-            mRole == roles::ROWHEADER ||
-            mRole == roles::GRID_CELL ||
-            mRole == roles::MATHML_CELL);
-  }
-
-  uint32_t AnchorCount(bool* aOk);
-
-  void AnchorURIAt(uint32_t aIndex, nsCString& aURI, bool* aOk);
-
-  ProxyAccessible* AnchorAt(uint32_t aIndex);
-
-  uint32_t LinkCount();
-
-  ProxyAccessible* LinkAt(const uint32_t& aIndex);
-
-  int32_t LinkIndexOf(ProxyAccessible* aLink);
-
-  int32_t LinkIndexAtOffset(uint32_t aOffset);
-
-  ProxyAccessible* TableOfACell();
-
-  uint32_t ColIdx();
-
-  uint32_t RowIdx();
-
-  uint32_t ColExtent();
-
-  uint32_t RowExtent();
-
-  void ColHeaderCells(nsTArray<ProxyAccessible*>* aCells);
-
-  void RowHeaderCells(nsTArray<ProxyAccessible*>* aCells);
-
-  bool IsCellSelected();
-
-  ProxyAccessible* TableCaption();
-  void TableSummary(nsString& aSummary);
-  uint32_t TableColumnCount();
-  uint32_t TableRowCount();
-  ProxyAccessible* TableCellAt(uint32_t aRow, uint32_t aCol);
-  int32_t TableCellIndexAt(uint32_t aRow, uint32_t aCol);
-  int32_t TableColumnIndexAt(uint32_t aCellIndex);
-  int32_t TableRowIndexAt(uint32_t aCellIndex);
-  void TableRowAndColumnIndicesAt(uint32_t aCellIndex,
-                                  int32_t* aRow, int32_t* aCol);
-  uint32_t TableColumnExtentAt(uint32_t aRow, uint32_t aCol);
-  uint32_t TableRowExtentAt(uint32_t aRow, uint32_t aCol);
-  void TableColumnDescription(uint32_t aCol, nsString& aDescription);
-  void TableRowDescription(uint32_t aRow, nsString& aDescription);
-  bool TableColumnSelected(uint32_t aCol);
-  bool TableRowSelected(uint32_t aRow);
-  bool TableCellSelected(uint32_t aRow, uint32_t aCol);
-  uint32_t TableSelectedCellCount();
-  uint32_t TableSelectedColumnCount();
-  uint32_t TableSelectedRowCount();
-  void TableSelectedCells(nsTArray<ProxyAccessible*>* aCellIDs);
-  void TableSelectedCellIndices(nsTArray<uint32_t>* aCellIndices);
-  void TableSelectedColumnIndices(nsTArray<uint32_t>* aColumnIndices);
-  void TableSelectedRowIndices(nsTArray<uint32_t>* aRowIndices);
-  void TableSelectColumn(uint32_t aCol);
-  void TableSelectRow(uint32_t aRow);
-  void TableUnselectColumn(uint32_t aCol);
-  void TableUnselectRow(uint32_t aRow);
-  bool TableIsProbablyForLayout();
-  ProxyAccessible* AtkTableColumnHeader(int32_t aCol);
-  ProxyAccessible* AtkTableRowHeader(int32_t aRow);
-
-  void SelectedItems(nsTArray<ProxyAccessible*>* aSelectedItems);
-  uint32_t SelectedItemCount();
-  ProxyAccessible* GetSelectedItem(uint32_t aIndex);
-  bool IsItemSelected(uint32_t aIndex);
-  bool AddItemToSelection(uint32_t aIndex);
-  bool RemoveItemFromSelection(uint32_t aIndex);
-  bool SelectAll();
-  bool UnselectAll();
-
-  void TakeSelection();
-  void SetSelected(bool aSelect);
-
-  bool DoAction(uint8_t aIndex);
-  uint8_t ActionCount();
-  void ActionDescriptionAt(uint8_t aIndex, nsString& aDescription);
-  void ActionNameAt(uint8_t aIndex, nsString& aName);
-  KeyBinding AccessKey();
-  KeyBinding KeyboardShortcut();
-  void AtkKeyBinding(nsString& aBinding);
-
-  double CurValue();
-  bool SetCurValue(double aValue);
-  double MinValue();
-  double MaxValue();
-  double Step();
-
-  void TakeFocus();
-  ProxyAccessible* FocusedChild();
-  ProxyAccessible* ChildAtPoint(int32_t aX, int32_t aY,
-                                Accessible::EWhichChildAtPoint aWhichChild);
-  nsIntRect Bounds();
-
-  void Language(nsString& aLocale);
-  void DocType(nsString& aType);
-  void Title(nsString& aTitle);
-  void URL(nsString& aURL);
-  void MimeType(nsString aMime);
-  void URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
-                          nsString& aMimeType);
-
-  ProxyAccessible* AccessibleAtPoint(int32_t aX, int32_t aY,
-                                     bool aNeedsScreenCoords);
-
-  void Extents(bool aNeedsScreenCoords, int32_t* aX, int32_t* aY,
-               int32_t* aWidth, int32_t* aHeight);
-
-  /**
-   * Return the id of the dom node this accessible represents.  Note this
-   * should probably only be used for testing.
-   */
-  void DOMNodeID(nsString& aID);
-
   /**
    * Allow the platform to store a pointers worth of data on us.
    */
   uintptr_t GetWrapper() const { return mWrapper; }
   void SetWrapper(uintptr_t aWrapper) { mWrapper = aWrapper; }
 
   /*
    * Return the ID of the accessible being proxied.
@@ -414,41 +143,48 @@ public:
   DocAccessibleParent* Document() const { return mDoc; }
 
   /**
    * Return true if this proxy is a DocAccessibleParent.
    */
   bool IsDoc() const { return mIsDoc; }
   DocAccessibleParent* AsDoc() const { return IsDoc() ? mDoc : nullptr; }
 
+
 protected:
-  explicit ProxyAccessible(DocAccessibleParent* aThisAsDoc) :
+  explicit ProxyAccessibleBase(DocAccessibleParent* aThisAsDoc) :
     mParent(nullptr), mDoc(aThisAsDoc), mWrapper(0), mID(0),
     mRole(roles::DOCUMENT), mOuterDoc(false), mIsDoc(true), mHasValue(false),
     mIsHyperLink(false), mIsHyperText(false)
-  { MOZ_COUNT_CTOR(ProxyAccessible); }
+  { MOZ_COUNT_CTOR(ProxyAccessibleBase); }
 
 protected:
-  ProxyAccessible* mParent;
+  Derived* mParent;
 
 private:
-  nsTArray<ProxyAccessible*> mChildren;
+  friend Derived;
+
+  nsTArray<Derived*> mChildren;
   DocAccessibleParent* mDoc;
   uintptr_t mWrapper;
   uint64_t mID;
+
 protected:
   // XXX DocAccessibleParent gets to change this to change the role of
   // documents.
   role mRole : 27;
+
 private:
   bool mOuterDoc : 1;
 
 public:
   const bool mIsDoc: 1;
   const bool mHasValue: 1;
   const bool mIsHyperLink: 1;
   const bool mIsHyperText: 1;
 };
 
+extern template class ProxyAccessibleBase<ProxyAccessible>;
+
 }
 }
 
 #endif
--- a/accessible/ipc/moz.build
+++ b/accessible/ipc/moz.build
@@ -33,23 +33,23 @@ if CONFIG['GNU_CXX']:
     CXXFLAGS += ['-Wno-error=shadow']
 
 # with --disable-accessibility we need to compile PDocAccessible.ipdl, but not
 # the C++.
 if CONFIG['ACCESSIBILITY']:
     EXPORTS.mozilla.a11y += [
         'DocAccessibleChildBase.h',
         'DocAccessibleParent.h',
-        'ProxyAccessible.h'
+        'ProxyAccessibleBase.h',
     ]
 
     UNIFIED_SOURCES += [
         'DocAccessibleChildBase.cpp',
         'DocAccessibleParent.cpp',
-        'ProxyAccessible.cpp'
+        'ProxyAccessibleBase.cpp',
     ]
 
     LOCAL_INCLUDES += [
         '/accessible/base',
         '/accessible/generic',
         '/accessible/xpcom',
     ]
 
copy from accessible/ipc/ProxyAccessible.cpp
copy to accessible/ipc/other/ProxyAccessible.cpp
--- a/accessible/ipc/ProxyAccessible.cpp
+++ b/accessible/ipc/other/ProxyAccessible.cpp
@@ -1,92 +1,29 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set ts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #include "ProxyAccessible.h"
-#include "DocAccessibleParent.h"
+#include "mozilla/a11y/DocAccessibleParent.h"
 #include "DocAccessible.h"
 #include "mozilla/a11y/DocManager.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/TabParent.h"
 #include "mozilla/unused.h"
 #include "mozilla/a11y/Platform.h"
 #include "RelationType.h"
 #include "mozilla/a11y/Role.h"
 #include "xpcAccessibleDocument.h"
 
 namespace mozilla {
 namespace a11y {
 
-void
-ProxyAccessible::Shutdown()
-{
-  MOZ_DIAGNOSTIC_ASSERT(!IsDoc());
-  NS_ASSERTION(!mOuterDoc, "Why do we still have a child doc?");
-  xpcAccessibleDocument* xpcDoc =
-    GetAccService()->GetCachedXPCDocument(Document());
-  if (xpcDoc) {
-    xpcDoc->NotifyOfShutdown(this);
-  }
-
-  // XXX Ideally  this wouldn't be necessary, but it seems OuterDoc accessibles
-  // can be destroyed before the doc they own.
-  if (!mOuterDoc) {
-    uint32_t childCount = mChildren.Length();
-    for (uint32_t idx = 0; idx < childCount; idx++)
-      mChildren[idx]->Shutdown();
-  } else {
-    if (mChildren.Length() != 1)
-      MOZ_CRASH("outer doc doesn't own adoc!");
-
-    mChildren[0]->AsDoc()->Unbind();
-  }
-
-  mChildren.Clear();
-  ProxyDestroyed(this);
-  mDoc->RemoveAccessible(this);
-}
-
-void
-ProxyAccessible::SetChildDoc(DocAccessibleParent* aParent)
-{
-  if (aParent) {
-    MOZ_ASSERT(mChildren.IsEmpty());
-    mChildren.AppendElement(aParent);
-    mOuterDoc = true;
-  } else {
-    MOZ_ASSERT(mChildren.Length() == 1);
-    mChildren.Clear();
-    mOuterDoc = false;
-  }
-}
-
-bool
-ProxyAccessible::MustPruneChildren() const
-{
-  // this is the equivalent to nsAccUtils::MustPrune for proxies and should be
-  // kept in sync with that.
-  if (mRole != roles::MENUITEM && mRole != roles::COMBOBOX_OPTION
-      && mRole != roles::OPTION && mRole != roles::ENTRY
-      && mRole != roles::FLAT_EQUATION && mRole != roles::PASSWORD_TEXT
-      && mRole != roles::PUSHBUTTON && mRole != roles::TOGGLE_BUTTON
-      && mRole != roles::GRAPHIC && mRole != roles::SLIDER
-      && mRole != roles::PROGRESSBAR && mRole != roles::SEPARATOR)
-    return false;
-
-  if (mChildren.Length() != 1)
-    return false;
-
-  return mChildren[0]->Role() == roles::TEXT_LEAF
-    || mChildren[0]->Role() == roles::STATICTEXT;
-}
-
 uint64_t
 ProxyAccessible::State() const
 {
   uint64_t state = 0;
   Unused << mDoc->SendState(mID, &state);
   return state;
 }
 
@@ -1027,65 +964,16 @@ ProxyAccessible::Step()
 }
 
 void
 ProxyAccessible::TakeFocus()
 {
   Unused << mDoc->SendTakeFocus(mID);
 }
 
-uint32_t
-ProxyAccessible::EmbeddedChildCount() const
-{
-  size_t count = 0, kids = mChildren.Length();
-  for (size_t i = 0; i < kids; i++) {
-    if (mChildren[i]->IsEmbeddedObject()) {
-      count++;
-    }
-  }
-
-  return count;
-}
-
-int32_t
-ProxyAccessible::IndexOfEmbeddedChild(const ProxyAccessible* aChild)
-{
-  size_t index = 0, kids = mChildren.Length();
-  for (size_t i = 0; i < kids; i++) {
-    if (mChildren[i]->IsEmbeddedObject()) {
-      if (mChildren[i] == aChild) {
-        return index;
-      }
-
-      index++;
-    }
-  }
-
-  return -1;
-}
-
-ProxyAccessible*
-ProxyAccessible::EmbeddedChildAt(size_t aChildIdx)
-{
-  size_t index = 0, kids = mChildren.Length();
-  for (size_t i = 0; i < kids; i++) {
-    if (!mChildren[i]->IsEmbeddedObject()) {
-      continue;
-    }
-
-    if (index == aChildIdx) {
-      return mChildren[i];
-    }
-
-    index++;
-  }
-
-  return nullptr;
-}
-
 ProxyAccessible*
 ProxyAccessible::FocusedChild()
 {
   uint64_t childID = 0;
   bool ok = false;
   Unused << mDoc->SendFocusedChild(mID, &childID, &ok);
   return ok ? mDoc->GetAccessible(childID) : nullptr;
 }
@@ -1170,23 +1058,10 @@ ProxyAccessible::Extents(bool aNeedsScre
 }
 
 void
 ProxyAccessible::DOMNodeID(nsString& aID)
 {
   Unused << mDoc->SendDOMNodeID(mID, &aID);
 }
 
-Accessible*
-ProxyAccessible::OuterDocOfRemoteBrowser() const
-{
-  auto tab = static_cast<dom::TabParent*>(mDoc->Manager());
-  dom::Element* frame = tab->GetOwnerElement();
-  NS_ASSERTION(frame, "why isn't the tab in a frame!");
-  if (!frame)
-    return nullptr;
-
-  DocAccessible* chromeDoc = GetExistingDocAccessible(frame->OwnerDoc());
-
-  return chromeDoc ? chromeDoc->GetAccessible(frame) : nullptr;
 }
 }
-}
copy from accessible/ipc/ProxyAccessible.h
copy to accessible/ipc/other/ProxyAccessible.h
--- a/accessible/ipc/ProxyAccessible.h
+++ b/accessible/ipc/other/ProxyAccessible.h
@@ -2,125 +2,43 @@
 /* vim: set ts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifndef mozilla_a11y_ProxyAccessible_h
 #define mozilla_a11y_ProxyAccessible_h
 
+#include "Accessible.h"
+#include "mozilla/a11y/ProxyAccessibleBase.h"
 #include "mozilla/a11y/Role.h"
 #include "nsIAccessibleText.h"
 #include "nsIAccessibleTypes.h"
-#include "Accessible.h"
 #include "nsString.h"
 #include "nsTArray.h"
 #include "nsRect.h"
-#include "Accessible.h"
 
 namespace mozilla {
 namespace a11y {
 
-class Accessible;
-class Attribute;
-class DocAccessibleParent;
-enum class RelationType;
-
-enum Interfaces
-{
-  HYPERTEXT = 1,
-  HYPERLINK = 1 << 1,
-  IMAGE = 1 << 2,
-  VALUE = 1 << 3,
-  TABLE = 1 << 4,
-  TABLECELL = 1 << 5,
-  DOCUMENT = 1 << 6,
-  SELECTION = 1 << 7,
-  ACTION = 1 << 8,
-};
-
-class ProxyAccessible
+class ProxyAccessible : public ProxyAccessibleBase<ProxyAccessible>
 {
 public:
 
   ProxyAccessible(uint64_t aID, ProxyAccessible* aParent,
-                  DocAccessibleParent* aDoc, role aRole, uint32_t aInterfaces) :
-     mParent(aParent), mDoc(aDoc), mWrapper(0), mID(aID), mRole(aRole),
-     mOuterDoc(false), mIsDoc(false),
-     mHasValue(aInterfaces & Interfaces::VALUE),
-     mIsHyperLink(aInterfaces & Interfaces::HYPERLINK),
-     mIsHyperText(aInterfaces & Interfaces::HYPERTEXT)
+                  DocAccessibleParent* aDoc, role aRole, uint32_t aInterfaces)
+    : ProxyAccessibleBase(aID, aParent, aDoc, aRole, aInterfaces)
+
   {
     MOZ_COUNT_CTOR(ProxyAccessible);
   }
+
   ~ProxyAccessible()
   {
     MOZ_COUNT_DTOR(ProxyAccessible);
-    MOZ_ASSERT(!mWrapper);
-  }
-
-  void AddChildAt(uint32_t aIdx, ProxyAccessible* aChild)
-  { mChildren.InsertElementAt(aIdx, aChild); }
-
-  uint32_t ChildrenCount() const { return mChildren.Length(); }
-  ProxyAccessible* ChildAt(uint32_t aIdx) const { return mChildren[aIdx]; }
-  ProxyAccessible* FirstChild() const
-    { return mChildren.Length() ? mChildren[0] : nullptr; }
-  ProxyAccessible* LastChild() const
-    { return mChildren.Length() ? mChildren[mChildren.Length() - 1] : nullptr; }
-  ProxyAccessible* PrevSibling() const
-  {
-    size_t idx = IndexInParent();
-    return idx > 0 ? Parent()->mChildren[idx - 1] : nullptr;
-  }
-  ProxyAccessible* NextSibling() const
-  {
-    size_t idx = IndexInParent();
-    return idx + 1 < Parent()->mChildren.Length() ? Parent()->mChildren[idx + 1]
-    : nullptr;
-  }
-
-  // XXX evaluate if this is fast enough.
-  size_t IndexInParent() const { return Parent()->mChildren.IndexOf(this); }
-  uint32_t EmbeddedChildCount() const;
-  int32_t IndexOfEmbeddedChild(const ProxyAccessible*);
-  ProxyAccessible* EmbeddedChildAt(size_t aChildIdx);
-  bool MustPruneChildren() const;
-
-  void Shutdown();
-
-  void SetChildDoc(DocAccessibleParent*);
-
-  /**
-   * Remove The given child.
-   */
-  void RemoveChild(ProxyAccessible* aChild)
-    { mChildren.RemoveElement(aChild); }
-
-  /**
-   * Return the proxy for the parent of the wrapped accessible.
-   */
-  ProxyAccessible* Parent() const { return mParent; }
-
-  Accessible* OuterDocOfRemoteBrowser() const;
-
-  /**
-   * Get the role of the accessible we're proxying.
-   */
-  role Role() const { return mRole; }
-
-  /**
-   * Return true if this is an embedded object.
-   */
-  bool IsEmbeddedObject() const
-  {
-    role role = Role();
-    return role != roles::TEXT_LEAF &&
-           role != roles::WHITESPACE &&
-           role != roles::STATICTEXT;
   }
 
   /*
    * Return the states for the proxied accessible.
    */
   uint64_t State() const;
 
   /*
@@ -391,64 +309,18 @@ public:
                int32_t* aWidth, int32_t* aHeight);
 
   /**
    * Return the id of the dom node this accessible represents.  Note this
    * should probably only be used for testing.
    */
   void DOMNodeID(nsString& aID);
 
-  /**
-   * Allow the platform to store a pointers worth of data on us.
-   */
-  uintptr_t GetWrapper() const { return mWrapper; }
-  void SetWrapper(uintptr_t aWrapper) { mWrapper = aWrapper; }
-
-  /*
-   * Return the ID of the accessible being proxied.
-   */
-  uint64_t ID() const { return mID; }
-
-  /**
-   * Return the document containing this proxy, or the proxy itself if it is a
-   * document.
-   */
-  DocAccessibleParent* Document() const { return mDoc; }
-
-  /**
-   * Return true if this proxy is a DocAccessibleParent.
-   */
-  bool IsDoc() const { return mIsDoc; }
-  DocAccessibleParent* AsDoc() const { return IsDoc() ? mDoc : nullptr; }
-
 protected:
-  explicit ProxyAccessible(DocAccessibleParent* aThisAsDoc) :
-    mParent(nullptr), mDoc(aThisAsDoc), mWrapper(0), mID(0),
-    mRole(roles::DOCUMENT), mOuterDoc(false), mIsDoc(true), mHasValue(false),
-    mIsHyperLink(false), mIsHyperText(false)
+  explicit ProxyAccessible(DocAccessibleParent* aThisAsDoc)
+    : ProxyAccessibleBase(aThisAsDoc)
   { MOZ_COUNT_CTOR(ProxyAccessible); }
-
-protected:
-  ProxyAccessible* mParent;
-
-private:
-  nsTArray<ProxyAccessible*> mChildren;
-  DocAccessibleParent* mDoc;
-  uintptr_t mWrapper;
-  uint64_t mID;
-protected:
-  // XXX DocAccessibleParent gets to change this to change the role of
-  // documents.
-  role mRole : 27;
-private:
-  bool mOuterDoc : 1;
-
-public:
-  const bool mIsDoc: 1;
-  const bool mHasValue: 1;
-  const bool mIsHyperLink: 1;
-  const bool mIsHyperText: 1;
 };
 
 }
 }
 
 #endif
--- a/accessible/ipc/other/moz.build
+++ b/accessible/ipc/other/moz.build
@@ -6,22 +6,22 @@
 
 IPDL_SOURCES += ['PDocAccessible.ipdl']
 
 # with --disable-accessibility we need to compile PDocAccessible.ipdl, but not
 # the C++.
 if CONFIG['ACCESSIBILITY']:
     EXPORTS.mozilla.a11y += [
         'DocAccessibleChild.h',
-        'ProxyAccessible.h'
+        'ProxyAccessible.h',
     ]
 
     SOURCES += [
         'DocAccessibleChild.cpp',
-        'ProxyAccessible.cpp'
+        'ProxyAccessible.cpp',
     ]
 
     LOCAL_INCLUDES += [
         '../../base',
         '../../generic',
         '../../xpcom',
     ]
 
copy from accessible/ipc/ProxyAccessible.cpp
copy to accessible/ipc/win/ProxyAccessible.cpp
--- a/accessible/ipc/ProxyAccessible.cpp
+++ b/accessible/ipc/win/ProxyAccessible.cpp
@@ -1,1192 +1,280 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* vim: set ts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+#include "Accessible2.h"
 #include "ProxyAccessible.h"
-#include "DocAccessibleParent.h"
+#include "mozilla/a11y/DocAccessibleParent.h"
 #include "DocAccessible.h"
 #include "mozilla/a11y/DocManager.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/TabParent.h"
 #include "mozilla/unused.h"
 #include "mozilla/a11y/Platform.h"
 #include "RelationType.h"
 #include "mozilla/a11y/Role.h"
 #include "xpcAccessibleDocument.h"
 
+#include <comutil.h>
+
 namespace mozilla {
 namespace a11y {
 
-void
-ProxyAccessible::Shutdown()
+bool
+ProxyAccessible::GetCOMInterface(void** aOutAccessible) const
 {
-  MOZ_DIAGNOSTIC_ASSERT(!IsDoc());
-  NS_ASSERTION(!mOuterDoc, "Why do we still have a child doc?");
-  xpcAccessibleDocument* xpcDoc =
-    GetAccService()->GetCachedXPCDocument(Document());
-  if (xpcDoc) {
-    xpcDoc->NotifyOfShutdown(this);
+  if (!aOutAccessible) {
+    return false;
+  }
+  RefPtr<IAccessible> addRefed = mCOMProxy;
+  addRefed.forget(aOutAccessible);
+  return !!mCOMProxy;
+}
+
+void
+ProxyAccessible::Name(nsString& aName) const
+{
+  aName.Truncate();
+  RefPtr<IAccessible> acc;
+  if (!GetCOMInterface((void**)getter_AddRefs(acc))) {
+    return;
   }
 
-  // XXX Ideally  this wouldn't be necessary, but it seems OuterDoc accessibles
-  // can be destroyed before the doc they own.
-  if (!mOuterDoc) {
-    uint32_t childCount = mChildren.Length();
-    for (uint32_t idx = 0; idx < childCount; idx++)
-      mChildren[idx]->Shutdown();
-  } else {
-    if (mChildren.Length() != 1)
-      MOZ_CRASH("outer doc doesn't own adoc!");
-
-    mChildren[0]->AsDoc()->Unbind();
+  VARIANT id;
+  id.vt = VT_I4;
+  id.lVal = CHILDID_SELF;
+  BSTR result;
+  HRESULT hr = acc->get_accName(id, &result);
+  _bstr_t resultWrap(result, false);
+  if (FAILED(hr)) {
+    return;
   }
-
-  mChildren.Clear();
-  ProxyDestroyed(this);
-  mDoc->RemoveAccessible(this);
+  aName = (wchar_t*)resultWrap;
 }
 
 void
-ProxyAccessible::SetChildDoc(DocAccessibleParent* aParent)
+ProxyAccessible::Value(nsString& aValue) const
 {
-  if (aParent) {
-    MOZ_ASSERT(mChildren.IsEmpty());
-    mChildren.AppendElement(aParent);
-    mOuterDoc = true;
-  } else {
-    MOZ_ASSERT(mChildren.Length() == 1);
-    mChildren.Clear();
-    mOuterDoc = false;
+  aValue.Truncate();
+  RefPtr<IAccessible> acc;
+  if (!GetCOMInterface((void**)getter_AddRefs(acc))) {
+    return;
   }
+
+  VARIANT id;
+  id.vt = VT_I4;
+  id.lVal = CHILDID_SELF;
+  BSTR result;
+  HRESULT hr = acc->get_accValue(id, &result);
+  _bstr_t resultWrap(result, false);
+  if (FAILED(hr)) {
+    return;
+  }
+  aValue = (wchar_t*)resultWrap;
 }
 
-bool
-ProxyAccessible::MustPruneChildren() const
+void
+ProxyAccessible::Description(nsString& aDesc) const
 {
-  // this is the equivalent to nsAccUtils::MustPrune for proxies and should be
-  // kept in sync with that.
-  if (mRole != roles::MENUITEM && mRole != roles::COMBOBOX_OPTION
-      && mRole != roles::OPTION && mRole != roles::ENTRY
-      && mRole != roles::FLAT_EQUATION && mRole != roles::PASSWORD_TEXT
-      && mRole != roles::PUSHBUTTON && mRole != roles::TOGGLE_BUTTON
-      && mRole != roles::GRAPHIC && mRole != roles::SLIDER
-      && mRole != roles::PROGRESSBAR && mRole != roles::SEPARATOR)
-    return false;
+  aDesc.Truncate();
+  RefPtr<IAccessible> acc;
+  if (!GetCOMInterface((void**)getter_AddRefs(acc))) {
+    return;
+  }
 
-  if (mChildren.Length() != 1)
-    return false;
-
-  return mChildren[0]->Role() == roles::TEXT_LEAF
-    || mChildren[0]->Role() == roles::STATICTEXT;
+  VARIANT id;
+  id.vt = VT_I4;
+  id.lVal = CHILDID_SELF;
+  BSTR result;
+  HRESULT hr = acc->get_accDescription(id, &result);
+  _bstr_t resultWrap(result, false);
+  if (FAILED(hr)) {
+    return;
+  }
+  aDesc = (wchar_t*)resultWrap;
 }
 
 uint64_t
 ProxyAccessible::State() const
 {
   uint64_t state = 0;
-  Unused << mDoc->SendState(mID, &state);
-  return state;
-}
-
-uint64_t
-ProxyAccessible::NativeState() const
-{
-  uint64_t state = 0;
-  Unused << mDoc->SendNativeState(mID, &state);
-  return state;
-}
-
-void
-ProxyAccessible::Name(nsString& aName) const
-{
-  Unused << mDoc->SendName(mID, &aName);
-}
-
-void
-ProxyAccessible::Value(nsString& aValue) const
-{
-  Unused << mDoc->SendValue(mID, &aValue);
-}
-
-void
-ProxyAccessible::Help(nsString& aHelp) const
-{
-  Unused << mDoc->SendHelp(mID, &aHelp);
-}
-
-void
-ProxyAccessible::Description(nsString& aDesc) const
-{
-  Unused << mDoc->SendDescription(mID, &aDesc);
-}
-
-void
-ProxyAccessible::Attributes(nsTArray<Attribute> *aAttrs) const
-{
-  Unused << mDoc->SendAttributes(mID, aAttrs);
-}
-
-nsTArray<ProxyAccessible*>
-ProxyAccessible::RelationByType(RelationType aType) const
-{
-  nsTArray<uint64_t> targetIDs;
-  Unused << mDoc->SendRelationByType(mID, static_cast<uint32_t>(aType),
-                                     &targetIDs);
-
-  size_t targetCount = targetIDs.Length();
-  nsTArray<ProxyAccessible*> targets(targetCount);
-  for (size_t i = 0; i < targetCount; i++)
-    if (ProxyAccessible* proxy = mDoc->GetAccessible(targetIDs[i]))
-      targets.AppendElement(proxy);
-
-  return Move(targets);
-}
-
-void
-ProxyAccessible::Relations(nsTArray<RelationType>* aTypes,
-                           nsTArray<nsTArray<ProxyAccessible*>>* aTargetSets)
-  const
-{
-  nsTArray<RelationTargets> ipcRelations;
-  Unused << mDoc->SendRelations(mID, &ipcRelations);
-
-  size_t relationCount = ipcRelations.Length();
-  aTypes->SetCapacity(relationCount);
-  aTargetSets->SetCapacity(relationCount);
-  for (size_t i = 0; i < relationCount; i++) {
-    uint32_t type = ipcRelations[i].Type();
-    if (type > static_cast<uint32_t>(RelationType::LAST))
-      continue;
-
-    size_t targetCount = ipcRelations[i].Targets().Length();
-    nsTArray<ProxyAccessible*> targets(targetCount);
-    for (size_t j = 0; j < targetCount; j++)
-      if (ProxyAccessible* proxy = mDoc->GetAccessible(ipcRelations[i].Targets()[j]))
-        targets.AppendElement(proxy);
-
-    if (targets.IsEmpty())
-      continue;
-
-    aTargetSets->AppendElement(Move(targets));
-    aTypes->AppendElement(static_cast<RelationType>(type));
-  }
-}
-
-bool
-ProxyAccessible::IsSearchbox() const
-{
-  bool retVal = false;
-  Unused << mDoc->SendIsSearchbox(mID, &retVal);
-  return retVal;
-}
-
-nsIAtom*
-ProxyAccessible::LandmarkRole() const
-{
-  nsString landmark;
-  Unused << mDoc->SendLandmarkRole(mID, &landmark);
-  return NS_GetStaticAtom(landmark);
-}
-
-nsIAtom*
-ProxyAccessible::ARIARoleAtom() const
-{
-  nsString role;
-  Unused << mDoc->SendARIARoleAtom(mID, &role);
-  return NS_GetStaticAtom(role);
-}
-
-int32_t
-ProxyAccessible::GetLevelInternal()
-{
-  int32_t level = 0;
-  Unused << mDoc->SendGetLevelInternal(mID, &level);
-  return level;
-}
-
-void
-ProxyAccessible::ScrollTo(uint32_t aScrollType)
-{
-  Unused << mDoc->SendScrollTo(mID, aScrollType);
-}
-
-void
-ProxyAccessible::ScrollToPoint(uint32_t aScrollType, int32_t aX, int32_t aY)
-{
-  Unused << mDoc->SendScrollToPoint(mID, aScrollType, aX, aY);
-}
-
-int32_t
-ProxyAccessible::CaretLineNumber()
-{
-  int32_t line = -1;
-  Unused << mDoc->SendCaretOffset(mID, &line);
-  return line;
-}
-
-int32_t
-ProxyAccessible::CaretOffset()
-{
-  int32_t offset = 0;
-  Unused << mDoc->SendCaretOffset(mID, &offset);
-  return offset;
-}
-
-void
-ProxyAccessible::SetCaretOffset(int32_t aOffset)
-{
-  Unused << mDoc->SendSetCaretOffset(mID, aOffset);
-}
-
-int32_t
-ProxyAccessible::CharacterCount()
-{
-  int32_t count = 0;
-  Unused << mDoc->SendCharacterCount(mID, &count);
-  return count;
-}
-
-int32_t
-ProxyAccessible::SelectionCount()
-{
-  int32_t count = 0;
-  Unused << mDoc->SendSelectionCount(mID, &count);
-  return count;
-}
-
-bool
-ProxyAccessible::TextSubstring(int32_t aStartOffset, int32_t aEndOfset,
-                               nsString& aText) const
-{
-  bool valid;
-  Unused << mDoc->SendTextSubstring(mID, aStartOffset, aEndOfset, &aText, &valid);
-  return valid;
-}
-
-void
-ProxyAccessible::GetTextAfterOffset(int32_t aOffset,
-                                    AccessibleTextBoundary aBoundaryType,
-                                    nsString& aText, int32_t* aStartOffset,
-                                    int32_t* aEndOffset)
-{
-  Unused << mDoc->SendGetTextAfterOffset(mID, aOffset, aBoundaryType,
-                                         &aText, aStartOffset, aEndOffset);
-}
-
-void
-ProxyAccessible::GetTextAtOffset(int32_t aOffset,
-                                 AccessibleTextBoundary aBoundaryType,
-                                 nsString& aText, int32_t* aStartOffset,
-                                 int32_t* aEndOffset)
-{
-  Unused << mDoc->SendGetTextAtOffset(mID, aOffset, aBoundaryType,
-                                      &aText, aStartOffset, aEndOffset);
-}
-
-void
-ProxyAccessible::GetTextBeforeOffset(int32_t aOffset,
-                                     AccessibleTextBoundary aBoundaryType,
-                                     nsString& aText, int32_t* aStartOffset,
-                                     int32_t* aEndOffset)
-{
-  Unused << mDoc->SendGetTextBeforeOffset(mID, aOffset, aBoundaryType,
-                                          &aText, aStartOffset, aEndOffset);
-}
-
-char16_t
-ProxyAccessible::CharAt(int32_t aOffset)
-{
-  uint16_t retval = 0;
-  Unused << mDoc->SendCharAt(mID, aOffset, &retval);
-  return static_cast<char16_t>(retval);
-}
-
-void
-ProxyAccessible::TextAttributes(bool aIncludeDefAttrs,
-                                int32_t aOffset,
-                                nsTArray<Attribute>* aAttributes,
-                                int32_t* aStartOffset,
-                                int32_t* aEndOffset)
-{
-  Unused << mDoc->SendTextAttributes(mID, aIncludeDefAttrs, aOffset,
-                                     aAttributes, aStartOffset, aEndOffset);
-}
-
-void
-ProxyAccessible::DefaultTextAttributes(nsTArray<Attribute>* aAttrs)
-{
-  Unused << mDoc->SendDefaultTextAttributes(mID, aAttrs);
-}
-
-nsIntRect
-ProxyAccessible::TextBounds(int32_t aStartOffset, int32_t aEndOffset,
-                            uint32_t aCoordType)
-{
-  nsIntRect rect;
-  Unused <<
-    mDoc->SendTextBounds(mID, aStartOffset, aEndOffset, aCoordType, &rect);
-  return rect;
-}
-
-nsIntRect
-ProxyAccessible::CharBounds(int32_t aOffset, uint32_t aCoordType)
-{
-  nsIntRect rect;
-  Unused <<
-    mDoc->SendCharBounds(mID, aOffset, aCoordType, &rect);
-  return rect;
-}
-
-int32_t
-ProxyAccessible::OffsetAtPoint(int32_t aX, int32_t aY, uint32_t aCoordType)
-{
-  int32_t retVal = -1;
-  Unused << mDoc->SendOffsetAtPoint(mID, aX, aY, aCoordType, &retVal);
-  return retVal;
-}
-
-bool
-ProxyAccessible::SelectionBoundsAt(int32_t aSelectionNum,
-                                   nsString& aData,
-                                   int32_t* aStartOffset,
-                                   int32_t* aEndOffset)
-{
-  bool retVal = false;
-  Unused << mDoc->SendSelectionBoundsAt(mID, aSelectionNum, &retVal, &aData,
-                                        aStartOffset, aEndOffset);
-  return retVal;
-}
-
-bool
-ProxyAccessible::SetSelectionBoundsAt(int32_t aSelectionNum,
-                                      int32_t aStartOffset,
-                                      int32_t aEndOffset)
-{
-  bool retVal = false;
-  Unused << mDoc->SendSetSelectionBoundsAt(mID, aSelectionNum, aStartOffset,
-                                           aEndOffset, &retVal);
-  return retVal;
-}
-
-bool
-ProxyAccessible::AddToSelection(int32_t aStartOffset,
-                                int32_t aEndOffset)
-{
-  bool retVal = false;
-  Unused << mDoc->SendAddToSelection(mID, aStartOffset, aEndOffset, &retVal);
-  return retVal;
-}
-
-bool
-ProxyAccessible::RemoveFromSelection(int32_t aSelectionNum)
-{
-  bool retVal = false;
-  Unused << mDoc->SendRemoveFromSelection(mID, aSelectionNum, &retVal);
-  return retVal;
-}
-
-void
-ProxyAccessible::ScrollSubstringTo(int32_t aStartOffset, int32_t aEndOffset,
-                                   uint32_t aScrollType)
-{
-  Unused << mDoc->SendScrollSubstringTo(mID, aStartOffset, aEndOffset, aScrollType);
-}
-
-void
-ProxyAccessible::ScrollSubstringToPoint(int32_t aStartOffset,
-                                        int32_t aEndOffset,
-                                        uint32_t aCoordinateType,
-                                        int32_t aX, int32_t aY)
-{
-  Unused << mDoc->SendScrollSubstringToPoint(mID, aStartOffset, aEndOffset,
-                                             aCoordinateType, aX, aY);
-}
-
-void
-ProxyAccessible::Text(nsString* aText)
-{
-  Unused << mDoc->SendText(mID, aText);
-}
-
-void
-ProxyAccessible::ReplaceText(const nsString& aText)
-{
-  Unused << mDoc->SendReplaceText(mID, aText);
-}
-
-bool
-ProxyAccessible::InsertText(const nsString& aText, int32_t aPosition)
-{
-  bool valid;
-  Unused << mDoc->SendInsertText(mID, aText, aPosition, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::CopyText(int32_t aStartPos, int32_t aEndPos)
-{
-  bool valid;
-  Unused << mDoc->SendCopyText(mID, aStartPos, aEndPos, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::CutText(int32_t aStartPos, int32_t aEndPos)
-{
-  bool valid;
-  Unused << mDoc->SendCutText(mID, aStartPos, aEndPos, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::DeleteText(int32_t aStartPos, int32_t aEndPos)
-{
-  bool valid;
-  Unused << mDoc->SendDeleteText(mID, aStartPos, aEndPos, &valid);
-  return valid;
-}
-
-bool
-ProxyAccessible::PasteText(int32_t aPosition)
-{
-  bool valid;
-  Unused << mDoc->SendPasteText(mID, aPosition, &valid);
-  return valid;
-}
-
-nsIntPoint
-ProxyAccessible::ImagePosition(uint32_t aCoordType)
-{
-  nsIntPoint retVal;
-  Unused << mDoc->SendImagePosition(mID, aCoordType, &retVal);
-  return retVal;
-}
-
-nsIntSize
-ProxyAccessible::ImageSize()
-{
-  nsIntSize retVal;
-  Unused << mDoc->SendImageSize(mID, &retVal);
-  return retVal;
-}
-
-uint32_t
-ProxyAccessible::StartOffset(bool* aOk)
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendStartOffset(mID, &retVal, aOk);
-  return retVal;
-}
-
-uint32_t
-ProxyAccessible::EndOffset(bool* aOk)
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendEndOffset(mID, &retVal, aOk);
-  return retVal;
-}
-
-bool
-ProxyAccessible::IsLinkValid()
-{
-  bool retVal = false;
-  Unused << mDoc->SendIsLinkValid(mID, &retVal);
-  return retVal;
-}
-
-uint32_t
-ProxyAccessible::AnchorCount(bool* aOk)
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendAnchorCount(mID, &retVal, aOk);
-  return retVal;
-}
-
-void
-ProxyAccessible::AnchorURIAt(uint32_t aIndex, nsCString& aURI, bool* aOk)
-{
-  Unused << mDoc->SendAnchorURIAt(mID, aIndex, &aURI, aOk);
-}
-
-ProxyAccessible*
-ProxyAccessible::AnchorAt(uint32_t aIndex)
-{
-  uint64_t id = 0;
-  bool ok = false;
-  Unused << mDoc->SendAnchorAt(mID, aIndex, &id, &ok);
-  return ok ? mDoc->GetAccessible(id) : nullptr;
-}
-
-uint32_t
-ProxyAccessible::LinkCount()
-{
-  uint32_t retVal = 0;
-  Unused << mDoc->SendLinkCount(mID, &retVal);
-  return retVal;
-}
-
-ProxyAccessible*
-ProxyAccessible::LinkAt(const uint32_t& aIndex)
-{
-  uint64_t linkID = 0;
-  bool ok = false;
-  Unused << mDoc->SendLinkAt(mID, aIndex, &linkID, &ok);
-  return ok ? mDoc->GetAccessible(linkID) : nullptr;
-}
-
-int32_t
-ProxyAccessible::LinkIndexOf(ProxyAccessible* aLink)
-{
-  int32_t retVal = -1;
-  if (aLink) {
-    Unused << mDoc->SendLinkIndexOf(mID, aLink->ID(), &retVal);
+  RefPtr<IAccessible> acc;
+  if (!GetCOMInterface((void**)getter_AddRefs(acc))) {
+    return state;
   }
 
-  return retVal;
-}
-
-int32_t
-ProxyAccessible::LinkIndexAtOffset(uint32_t aOffset)
-{
-  int32_t retVal = -1;
-  Unused << mDoc->SendLinkIndexAtOffset(mID, aOffset, &retVal);
-  return retVal;
-}
-
-ProxyAccessible*
-ProxyAccessible::TableOfACell()
-{
-  uint64_t tableID = 0;
-  bool ok = false;
-  Unused << mDoc->SendTableOfACell(mID, &tableID, &ok);
-  return ok ? mDoc->GetAccessible(tableID) : nullptr;
-}
-
-uint32_t
-ProxyAccessible::ColIdx()
-{
-  uint32_t index = 0;
-  Unused << mDoc->SendColIdx(mID, &index);
-  return index;
-}
-
-uint32_t
-ProxyAccessible::RowIdx()
-{
-  uint32_t index = 0;
-  Unused << mDoc->SendRowIdx(mID, &index);
-  return index;
-}
-
-uint32_t
-ProxyAccessible::ColExtent()
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendColExtent(mID, &extent);
-  return extent;
-}
-
-uint32_t
-ProxyAccessible::RowExtent()
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendRowExtent(mID, &extent);
-  return extent;
-}
-
-void
-ProxyAccessible::ColHeaderCells(nsTArray<ProxyAccessible*>* aCells)
-{
-  nsTArray<uint64_t> targetIDs;
-  Unused << mDoc->SendColHeaderCells(mID, &targetIDs);
-
-  size_t targetCount = targetIDs.Length();
-  for (size_t i = 0; i < targetCount; i++) {
-    aCells->AppendElement(mDoc->GetAccessible(targetIDs[i]));
-  }
-}
-
-void
-ProxyAccessible::RowHeaderCells(nsTArray<ProxyAccessible*>* aCells)
-{
-  nsTArray<uint64_t> targetIDs;
-  Unused << mDoc->SendRowHeaderCells(mID, &targetIDs);
-
-  size_t targetCount = targetIDs.Length();
-  for (size_t i = 0; i < targetCount; i++) {
-    aCells->AppendElement(mDoc->GetAccessible(targetIDs[i]));
-  }
-}
-
-bool
-ProxyAccessible::IsCellSelected()
-{
-  bool selected = false;
-  Unused << mDoc->SendIsCellSelected(mID, &selected);
-  return selected;
-}
-
-ProxyAccessible*
-ProxyAccessible::TableCaption()
-{
-  uint64_t captionID = 0;
-  bool ok = false;
-  Unused << mDoc->SendTableCaption(mID, &captionID, &ok);
-  return ok ? mDoc->GetAccessible(captionID) : nullptr;
-}
-
-void
-ProxyAccessible::TableSummary(nsString& aSummary)
-{
-  Unused << mDoc->SendTableSummary(mID, &aSummary);
-}
-
-uint32_t
-ProxyAccessible::TableColumnCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableColumnCount(mID, &count);
-  return count;
-}
-
-uint32_t
-ProxyAccessible::TableRowCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableRowCount(mID, &count);
-  return count;
-}
-
-ProxyAccessible*
-ProxyAccessible::TableCellAt(uint32_t aRow, uint32_t aCol)
-{
-  uint64_t cellID = 0;
-  bool ok = false;
-  Unused << mDoc->SendTableCellAt(mID, aRow, aCol, &cellID, &ok);
-  return ok ? mDoc->GetAccessible(cellID) : nullptr;
-}
-
-int32_t
-ProxyAccessible::TableCellIndexAt(uint32_t aRow, uint32_t aCol)
-{
-  int32_t index = 0;
-  Unused << mDoc->SendTableCellIndexAt(mID, aRow, aCol, &index);
-  return index;
-}
-
-int32_t
-ProxyAccessible::TableColumnIndexAt(uint32_t aCellIndex)
-{
-  int32_t index = 0;
-  Unused << mDoc->SendTableColumnIndexAt(mID, aCellIndex, &index);
-  return index;
-}
-
-int32_t
-ProxyAccessible::TableRowIndexAt(uint32_t aCellIndex)
-{
-  int32_t index = 0;
-  Unused << mDoc->SendTableRowIndexAt(mID, aCellIndex, &index);
-  return index;
-}
-
-void
-ProxyAccessible::TableRowAndColumnIndicesAt(uint32_t aCellIndex,
-                                            int32_t* aRow, int32_t* aCol)
-{
-  Unused << mDoc->SendTableRowAndColumnIndicesAt(mID, aCellIndex, aRow, aCol);
-}
-
-uint32_t
-ProxyAccessible::TableColumnExtentAt(uint32_t aRow, uint32_t aCol)
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendTableColumnExtentAt(mID, aRow, aCol, &extent);
-  return extent;
-}
-
-uint32_t
-ProxyAccessible::TableRowExtentAt(uint32_t aRow, uint32_t aCol)
-{
-  uint32_t extent = 0;
-  Unused << mDoc->SendTableRowExtentAt(mID, aRow, aCol, &extent);
-  return extent;
-}
-
-void
-ProxyAccessible::TableColumnDescription(uint32_t aCol, nsString& aDescription)
-{
-  Unused << mDoc->SendTableColumnDescription(mID, aCol, &aDescription);
-}
-
-void
-ProxyAccessible::TableRowDescription(uint32_t aRow, nsString& aDescription)
-{
-  Unused << mDoc->SendTableRowDescription(mID, aRow, &aDescription);
-}
-
-bool
-ProxyAccessible::TableColumnSelected(uint32_t aCol)
-{
-  bool selected = false;
-  Unused << mDoc->SendTableColumnSelected(mID, aCol, &selected);
-  return selected;
-}
-
-bool
-ProxyAccessible::TableRowSelected(uint32_t aRow)
-{
-  bool selected = false;
-  Unused << mDoc->SendTableRowSelected(mID, aRow, &selected);
-  return selected;
-}
-
-bool
-ProxyAccessible::TableCellSelected(uint32_t aRow, uint32_t aCol)
-{
-  bool selected = false;
-  Unused << mDoc->SendTableCellSelected(mID, aRow, aCol, &selected);
-  return selected;
-}
-
-uint32_t
-ProxyAccessible::TableSelectedCellCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableSelectedCellCount(mID, &count);
-  return count;
-}
-
-uint32_t
-ProxyAccessible::TableSelectedColumnCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableSelectedColumnCount(mID, &count);
-  return count;
-}
-
-uint32_t
-ProxyAccessible::TableSelectedRowCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendTableSelectedRowCount(mID, &count);
-  return count;
-}
-
-void
-ProxyAccessible::TableSelectedCells(nsTArray<ProxyAccessible*>* aCellIDs)
-{
-  AutoTArray<uint64_t, 30> cellIDs;
-  Unused << mDoc->SendTableSelectedCells(mID, &cellIDs);
-  aCellIDs->SetCapacity(cellIDs.Length());
-  for (uint32_t i = 0; i < cellIDs.Length(); ++i) {
-    aCellIDs->AppendElement(mDoc->GetAccessible(cellIDs[i]));
+  VARIANT id;
+  id.vt = VT_I4;
+  id.lVal = CHILDID_SELF;
+  VARIANT varState;
+  HRESULT hr = acc->get_accState(id, &varState);
+  if (FAILED(hr)) {
+    return state;
   }
-}
-
-void
-ProxyAccessible::TableSelectedCellIndices(nsTArray<uint32_t>* aCellIndices)
-{
-  Unused << mDoc->SendTableSelectedCellIndices(mID, aCellIndices);
-}
-
-void
-ProxyAccessible::TableSelectedColumnIndices(nsTArray<uint32_t>* aColumnIndices)
-{
-  Unused << mDoc->SendTableSelectedColumnIndices(mID, aColumnIndices);
-}
-
-void
-ProxyAccessible::TableSelectedRowIndices(nsTArray<uint32_t>* aRowIndices)
-{
-  Unused << mDoc->SendTableSelectedRowIndices(mID, aRowIndices);
-}
-
-void
-ProxyAccessible::TableSelectColumn(uint32_t aCol)
-{
-  Unused << mDoc->SendTableSelectColumn(mID, aCol);
-}
-
-void
-ProxyAccessible::TableSelectRow(uint32_t aRow)
-{
-  Unused << mDoc->SendTableSelectRow(mID, aRow);
-}
-
-void
-ProxyAccessible::TableUnselectColumn(uint32_t aCol)
-{
-  Unused << mDoc->SendTableUnselectColumn(mID, aCol);
-}
-
-void
-ProxyAccessible::TableUnselectRow(uint32_t aRow)
-{
-  Unused << mDoc->SendTableUnselectRow(mID, aRow);
-}
-
-bool
-ProxyAccessible::TableIsProbablyForLayout()
-{
-  bool forLayout = false;
-  Unused << mDoc->SendTableIsProbablyForLayout(mID, &forLayout);
-  return forLayout;
-}
-
-ProxyAccessible*
-ProxyAccessible::AtkTableColumnHeader(int32_t aCol)
-{
-  uint64_t headerID = 0;
-  bool ok = false;
-  Unused << mDoc->SendAtkTableColumnHeader(mID, aCol, &headerID, &ok);
-  return ok ? mDoc->GetAccessible(headerID) : nullptr;
-}
-
-ProxyAccessible*
-ProxyAccessible::AtkTableRowHeader(int32_t aRow)
-{
-  uint64_t headerID = 0;
-  bool ok = false;
-  Unused << mDoc->SendAtkTableRowHeader(mID, aRow, &headerID, &ok);
-  return ok ? mDoc->GetAccessible(headerID) : nullptr;
-}
-
-void
-ProxyAccessible::SelectedItems(nsTArray<ProxyAccessible*>* aSelectedItems)
-{
-  AutoTArray<uint64_t, 10> itemIDs;
-  Unused << mDoc->SendSelectedItems(mID, &itemIDs);
-  aSelectedItems->SetCapacity(itemIDs.Length());
-  for (size_t i = 0; i < itemIDs.Length(); ++i) {
-    aSelectedItems->AppendElement(mDoc->GetAccessible(itemIDs[i]));
-  }
-}
-
-uint32_t
-ProxyAccessible::SelectedItemCount()
-{
-  uint32_t count = 0;
-  Unused << mDoc->SendSelectedItemCount(mID, &count);
-  return count;
-}
-
-ProxyAccessible*
-ProxyAccessible::GetSelectedItem(uint32_t aIndex)
-{
-  uint64_t selectedItemID = 0;
-  bool ok = false;
-  Unused << mDoc->SendGetSelectedItem(mID, aIndex, &selectedItemID, &ok);
-  return ok ? mDoc->GetAccessible(selectedItemID) : nullptr;
-}
-
-bool
-ProxyAccessible::IsItemSelected(uint32_t aIndex)
-{
-  bool selected = false;
-  Unused << mDoc->SendIsItemSelected(mID, aIndex, &selected);
-  return selected;
-}
- 
-bool
-ProxyAccessible::AddItemToSelection(uint32_t aIndex)
-{
-  bool success = false;
-  Unused << mDoc->SendAddItemToSelection(mID, aIndex, &success);
-  return success;
-}
-
-bool
-ProxyAccessible::RemoveItemFromSelection(uint32_t aIndex)
-{
-  bool success = false;
-  Unused << mDoc->SendRemoveItemFromSelection(mID, aIndex, &success);
-  return success;
-}
-
-bool
-ProxyAccessible::SelectAll()
-{
-  bool success = false;
-  Unused << mDoc->SendSelectAll(mID, &success);
-  return success;
-}
-
-bool
-ProxyAccessible::UnselectAll()
-{
-  bool success = false;
-  Unused << mDoc->SendUnselectAll(mID, &success);
-  return success;
-}
-
-void
-ProxyAccessible::TakeSelection()
-{
-  Unused << mDoc->SendTakeSelection(mID);
-}
-
-void
-ProxyAccessible::SetSelected(bool aSelect)
-{
-  Unused << mDoc->SendSetSelected(mID, aSelect);
-}
-
-bool
-ProxyAccessible::DoAction(uint8_t aIndex)
-{
-  bool success = false;
-  Unused << mDoc->SendDoAction(mID, aIndex, &success);
-  return success;
-}
-
-uint8_t
-ProxyAccessible::ActionCount()
-{
-  uint8_t count = 0;
-  Unused << mDoc->SendActionCount(mID, &count);
-  return count;
-}
-
-void
-ProxyAccessible::ActionDescriptionAt(uint8_t aIndex, nsString& aDescription)
-{
-  Unused << mDoc->SendActionDescriptionAt(mID, aIndex, &aDescription);
-}
-
-void
-ProxyAccessible::ActionNameAt(uint8_t aIndex, nsString& aName)
-{
-  Unused << mDoc->SendActionNameAt(mID, aIndex, &aName);
-}
-
-KeyBinding
-ProxyAccessible::AccessKey()
-{
-  uint32_t key = 0;
-  uint32_t modifierMask = 0;
-  Unused << mDoc->SendAccessKey(mID, &key, &modifierMask);
-  return KeyBinding(key, modifierMask);
-}
-
-KeyBinding
-ProxyAccessible::KeyboardShortcut()
-{
-  uint32_t key = 0;
-  uint32_t modifierMask = 0;
-  Unused << mDoc->SendKeyboardShortcut(mID, &key, &modifierMask);
-  return KeyBinding(key, modifierMask);
-}
-
-void
-ProxyAccessible::AtkKeyBinding(nsString& aBinding)
-{
-  Unused << mDoc->SendAtkKeyBinding(mID, &aBinding);
-}
-
-double
-ProxyAccessible::CurValue()
-{
-  double val = UnspecifiedNaN<double>();
-  Unused << mDoc->SendCurValue(mID, &val);
-  return val;
-}
-
-bool
-ProxyAccessible::SetCurValue(double aValue)
-{
-  bool success = false;
-  Unused << mDoc->SendSetCurValue(mID, aValue, &success);
-  return success;
-}
-
-double
-ProxyAccessible::MinValue()
-{
-  double val = UnspecifiedNaN<double>();
-  Unused << mDoc->SendMinValue(mID, &val);
-  return val;
-}
-
-double
-ProxyAccessible::MaxValue()
-{
-  double val = UnspecifiedNaN<double>();
-  Unused << mDoc->SendMaxValue(mID, &val);
-  return val;
-}
-
-double
-ProxyAccessible::Step()
-{
-  double step = UnspecifiedNaN<double>();
-  Unused << mDoc->SendStep(mID, &step);
-  return step;
-}
-
-void
-ProxyAccessible::TakeFocus()
-{
-  Unused << mDoc->SendTakeFocus(mID);
-}
-
-uint32_t
-ProxyAccessible::EmbeddedChildCount() const
-{
-  size_t count = 0, kids = mChildren.Length();
-  for (size_t i = 0; i < kids; i++) {
-    if (mChildren[i]->IsEmbeddedObject()) {
-      count++;
-    }
-  }
-
-  return count;
-}
-
-int32_t
-ProxyAccessible::IndexOfEmbeddedChild(const ProxyAccessible* aChild)
-{
-  size_t index = 0, kids = mChildren.Length();
-  for (size_t i = 0; i < kids; i++) {
-    if (mChildren[i]->IsEmbeddedObject()) {
-      if (mChildren[i] == aChild) {
-        return index;
-      }
-
-      index++;
-    }
-  }
-
-  return -1;
-}
-
-ProxyAccessible*
-ProxyAccessible::EmbeddedChildAt(size_t aChildIdx)
-{
-  size_t index = 0, kids = mChildren.Length();
-  for (size_t i = 0; i < kids; i++) {
-    if (!mChildren[i]->IsEmbeddedObject()) {
-      continue;
-    }
-
-    if (index == aChildIdx) {
-      return mChildren[i];
-    }
-
-    index++;
-  }
-
-  return nullptr;
-}
-
-ProxyAccessible*
-ProxyAccessible::FocusedChild()
-{
-  uint64_t childID = 0;
-  bool ok = false;
-  Unused << mDoc->SendFocusedChild(mID, &childID, &ok);
-  return ok ? mDoc->GetAccessible(childID) : nullptr;
-}
-
-ProxyAccessible*
-ProxyAccessible::ChildAtPoint(int32_t aX, int32_t aY,
-                              Accessible::EWhichChildAtPoint aWhichChild)
-{
-  uint64_t childID = 0;
-  bool ok = false;
-  Unused << mDoc->SendAccessibleAtPoint(mID, aX, aY, false,
-                                        static_cast<uint32_t>(aWhichChild),
-                                        &childID, &ok);
-  return ok ? mDoc->GetAccessible(childID) : nullptr;
+  return uint64_t(varState.lVal);
 }
 
 nsIntRect
 ProxyAccessible::Bounds()
 {
   nsIntRect rect;
-  Unused << mDoc->SendExtents(mID, false,
-                              &(rect.x), &(rect.y),
-                              &(rect.width), &(rect.height));
+
+  RefPtr<IAccessible> acc;
+  if (!GetCOMInterface((void**)getter_AddRefs(acc))) {
+    return rect;
+  }
+
+  long left;
+  long top;
+  long width;
+  long height;
+  VARIANT id;
+  id.vt = VT_I4;
+  id.lVal = CHILDID_SELF;
+  HRESULT hr = acc->accLocation(&left, &top, &width, &height, id);
+  if (FAILED(hr)) {
+    return rect;
+  }
+  rect.x = left;
+  rect.y = top;
+  rect.width = width;
+  rect.height = height;
   return rect;
 }
 
 void
 ProxyAccessible::Language(nsString& aLocale)
 {
-  Unused << mDoc->SendLanguage(mID, &aLocale);
+  aLocale.Truncate();
+
+  RefPtr<IAccessible> acc;
+  if (!GetCOMInterface((void**)getter_AddRefs(acc))) {
+    return;
+  }
+
+  RefPtr<IAccessible2> acc2;
+  if (FAILED(acc->QueryInterface(IID_IAccessible2, (void**)getter_AddRefs(acc2)))) {
+    return;
+  }
+
+  IA2Locale locale;
+  HRESULT hr = acc2->get_locale(&locale);
+
+  _bstr_t langWrap(locale.language, false);
+  _bstr_t countryWrap(locale.country, false);
+  _bstr_t variantWrap(locale.variant, false);
+
+  if (FAILED(hr)) {
+    return;
+  }
+
+  // The remaining code should essentially be the inverse of the
+  // ia2Accessible::get_locale conversion to IA2Locale.
+
+  if (!!variantWrap) {
+    aLocale = (wchar_t*)variantWrap;
+    return;
+  }
+
+  if (!!langWrap) {
+    aLocale = (wchar_t*)langWrap;
+    if (!!countryWrap) {
+      aLocale += L"-";
+      aLocale += (wchar_t*)countryWrap;
+    }
+  }
 }
 
-void
-ProxyAccessible::DocType(nsString& aType)
+static bool
+IsEscapedChar(const wchar_t c)
 {
-  Unused << mDoc->SendDocType(mID, &aType);
+  return c == L'\\' || c == L':' || c == ',' || c == '=' || c == ';';
 }
 
-void
-ProxyAccessible::Title(nsString& aTitle)
+static bool
+ConvertBSTRAttributesToArray(const nsAString& aStr,
+                             nsTArray<Attribute>* aAttrs)
 {
-  Unused << mDoc->SendTitle(mID, &aTitle);
-}
+  if (!aAttrs) {
+    return false;
+  }
+
+  enum
+  {
+    eName = 0,
+    eValue = 1,
+    eNumStates
+  } state;
+  nsAutoString tokens[eNumStates];
+  auto itr = aStr.BeginReading(), end = aStr.EndReading();
 
-void
-ProxyAccessible::URL(nsString& aURL)
-{
-  Unused << mDoc->SendURL(mID, &aURL);
-}
-
-void
-ProxyAccessible::MimeType(nsString aMime)
-{
-  Unused << mDoc->SendMimeType(mID, &aMime);
+  state = eName;
+  while (itr != end) {
+    switch (*itr) {
+      case L'\\':
+        // Skip the backslash so that we're looking at the escaped char
+        ++itr;
+        if (itr == end || !IsEscapedChar(*itr)) {
+          // Invalid state
+          return false;
+        }
+        break;
+      case L':':
+        if (state != eName) {
+          // Bad, should be looking at name
+          return false;
+        }
+        state = eValue;
+        ++itr;
+        continue;
+      case L';':
+        if (state != eValue) {
+          // Bad, should be looking at value
+          return false;
+        }
+        state = eName;
+        aAttrs->AppendElement(Attribute(NS_ConvertUTF16toUTF8(tokens[eName]),
+                                        tokens[eValue]));
+        tokens[eName].Truncate();
+        tokens[eValue].Truncate();
+        ++itr;
+        continue;
+      default:
+        break;
+    }
+    tokens[state] += *itr;
+  }
+  return true;
 }
 
 void
-ProxyAccessible::URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
-                                    nsString& aMimeType)
+ProxyAccessible::Attributes(nsTArray<Attribute>* aAttrs) const
 {
-  Unused << mDoc->SendURLDocTypeMimeType(mID, &aURL, &aDocType, &aMimeType);
-}
+  aAttrs->Clear();
+
+  RefPtr<IAccessible> acc;
+  if (!GetCOMInterface((void**)getter_AddRefs(acc))) {
+    return;
+  }
 
-ProxyAccessible*
-ProxyAccessible::AccessibleAtPoint(int32_t aX, int32_t aY,
-                                   bool aNeedsScreenCoords)
-{
-  uint64_t childID = 0;
-  bool ok = false;
-  Unused <<
-    mDoc->SendAccessibleAtPoint(mID, aX, aY, aNeedsScreenCoords,
-                                static_cast<uint32_t>(Accessible::eDirectChild),
-                                &childID, &ok);
-  return ok ? mDoc->GetAccessible(childID) : nullptr;
+  RefPtr<IAccessible2> acc2;
+  if (FAILED(acc->QueryInterface(IID_IAccessible2, (void**)getter_AddRefs(acc2)))) {
+    return;
+  }
+
+  BSTR attrs;
+  HRESULT hr = acc2->get_attributes(&attrs);
+  _bstr_t attrsWrap(attrs, false);
+  if (FAILED(hr)) {
+    return;
+  }
+
+  ConvertBSTRAttributesToArray(nsDependentString((wchar_t*)attrs,
+                                                 attrsWrap.length()),
+                               aAttrs);
 }
 
-void
-ProxyAccessible::Extents(bool aNeedsScreenCoords, int32_t* aX, int32_t* aY,
-                        int32_t* aWidth, int32_t* aHeight)
-{
-  Unused << mDoc->SendExtents(mID, aNeedsScreenCoords, aX, aY, aWidth, aHeight);
-}
-
-void
-ProxyAccessible::DOMNodeID(nsString& aID)
-{
-  Unused << mDoc->SendDOMNodeID(mID, &aID);
-}
-
-Accessible*
-ProxyAccessible::OuterDocOfRemoteBrowser() const
-{
-  auto tab = static_cast<dom::TabParent*>(mDoc->Manager());
-  dom::Element* frame = tab->GetOwnerElement();
-  NS_ASSERTION(frame, "why isn't the tab in a frame!");
-  if (!frame)
-    return nullptr;
-
-  DocAccessible* chromeDoc = GetExistingDocAccessible(frame->OwnerDoc());
-
-  return chromeDoc ? chromeDoc->GetAccessible(frame) : nullptr;
-}
-}
-}
+} // namespace a11y
+} // namespace mozilla
copy from accessible/ipc/ProxyAccessible.h
copy to accessible/ipc/win/ProxyAccessible.h
--- a/accessible/ipc/ProxyAccessible.h
+++ b/accessible/ipc/win/ProxyAccessible.h
@@ -2,453 +2,87 @@
 /* vim: set ts=2 et sw=2 tw=80: */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
 #ifndef mozilla_a11y_ProxyAccessible_h
 #define mozilla_a11y_ProxyAccessible_h
 
+#include "Accessible.h"
+#include "mozilla/a11y/ProxyAccessibleBase.h"
 #include "mozilla/a11y/Role.h"
 #include "nsIAccessibleText.h"
 #include "nsIAccessibleTypes.h"
-#include "Accessible.h"
 #include "nsString.h"
 #include "nsTArray.h"
 #include "nsRect.h"
-#include "Accessible.h"
+
+#include <oleacc.h>
 
 namespace mozilla {
 namespace a11y {
 
-class Accessible;
-class Attribute;
-class DocAccessibleParent;
-enum class RelationType;
-
-enum Interfaces
-{
-  HYPERTEXT = 1,
-  HYPERLINK = 1 << 1,
-  IMAGE = 1 << 2,
-  VALUE = 1 << 3,
-  TABLE = 1 << 4,
-  TABLECELL = 1 << 5,
-  DOCUMENT = 1 << 6,
-  SELECTION = 1 << 7,
-  ACTION = 1 << 8,
-};
-
-class ProxyAccessible
+class ProxyAccessible : public ProxyAccessibleBase<ProxyAccessible>
 {
 public:
+  ProxyAccessible(uint64_t aID, ProxyAccessible* aParent,
+                  DocAccessibleParent* aDoc, role aRole, uint32_t aInterfaces,
+                  const RefPtr<IAccessible>& aIAccessible)
+    : ProxyAccessibleBase(aID, aParent, aDoc, aRole, aInterfaces)
+    , mCOMProxy(aIAccessible)
 
-  ProxyAccessible(uint64_t aID, ProxyAccessible* aParent,
-                  DocAccessibleParent* aDoc, role aRole, uint32_t aInterfaces) :
-     mParent(aParent), mDoc(aDoc), mWrapper(0), mID(aID), mRole(aRole),
-     mOuterDoc(false), mIsDoc(false),
-     mHasValue(aInterfaces & Interfaces::VALUE),
-     mIsHyperLink(aInterfaces & Interfaces::HYPERLINK),
-     mIsHyperText(aInterfaces & Interfaces::HYPERTEXT)
   {
     MOZ_COUNT_CTOR(ProxyAccessible);
   }
+
   ~ProxyAccessible()
   {
     MOZ_COUNT_DTOR(ProxyAccessible);
-    MOZ_ASSERT(!mWrapper);
-  }
-
-  void AddChildAt(uint32_t aIdx, ProxyAccessible* aChild)
-  { mChildren.InsertElementAt(aIdx, aChild); }
-
-  uint32_t ChildrenCount() const { return mChildren.Length(); }
-  ProxyAccessible* ChildAt(uint32_t aIdx) const { return mChildren[aIdx]; }
-  ProxyAccessible* FirstChild() const
-    { return mChildren.Length() ? mChildren[0] : nullptr; }
-  ProxyAccessible* LastChild() const
-    { return mChildren.Length() ? mChildren[mChildren.Length() - 1] : nullptr; }
-  ProxyAccessible* PrevSibling() const
-  {
-    size_t idx = IndexInParent();
-    return idx > 0 ? Parent()->mChildren[idx - 1] : nullptr;
-  }
-  ProxyAccessible* NextSibling() const
-  {
-    size_t idx = IndexInParent();
-    return idx + 1 < Parent()->mChildren.Length() ? Parent()->mChildren[idx + 1]
-    : nullptr;
-  }
-
-  // XXX evaluate if this is fast enough.
-  size_t IndexInParent() const { return Parent()->mChildren.IndexOf(this); }
-  uint32_t EmbeddedChildCount() const;
-  int32_t IndexOfEmbeddedChild(const ProxyAccessible*);
-  ProxyAccessible* EmbeddedChildAt(size_t aChildIdx);
-  bool MustPruneChildren() const;
-
-  void Shutdown();
-
-  void SetChildDoc(DocAccessibleParent*);
-
-  /**
-   * Remove The given child.
-   */
-  void RemoveChild(ProxyAccessible* aChild)
-    { mChildren.RemoveElement(aChild); }
-
-  /**
-   * Return the proxy for the parent of the wrapped accessible.
-   */
-  ProxyAccessible* Parent() const { return mParent; }
-
-  Accessible* OuterDocOfRemoteBrowser() const;
-
-  /**
-   * Get the role of the accessible we're proxying.
-   */
-  role Role() const { return mRole; }
-
-  /**
-   * Return true if this is an embedded object.
-   */
-  bool IsEmbeddedObject() const
-  {
-    role role = Role();
-    return role != roles::TEXT_LEAF &&
-           role != roles::WHITESPACE &&
-           role != roles::STATICTEXT;
   }
 
   /*
    * Return the states for the proxied accessible.
    */
   uint64_t State() const;
 
   /*
-   * Return the native states for the proxied accessible.
-   */
-  uint64_t NativeState() const;
-
-  /*
    * Set aName to the name of the proxied accessible.
    */
   void Name(nsString& aName) const;
 
   /*
    * Set aValue to the value of the proxied accessible.
    */
   void Value(nsString& aValue) const;
 
-  /*
-   * Set aHelp to the help string of the proxied accessible.
-   */
-  void Help(nsString& aHelp) const;
-
   /**
    * Set aDesc to the description of the proxied accessible.
    */
   void Description(nsString& aDesc) const;
 
   /**
    * Get the set of attributes on the proxied accessible.
    */
   void Attributes(nsTArray<Attribute> *aAttrs) const;
 
-  /**
-   * Return set of targets of given relation type.
-   */
-  nsTArray<ProxyAccessible*> RelationByType(RelationType aType) const;
-
-  /**
-   * Get all relations for this accessible.
-   */
-  void Relations(nsTArray<RelationType>* aTypes,
-                 nsTArray<nsTArray<ProxyAccessible*>>* aTargetSets) const;
-
-  bool IsSearchbox() const;
-
-  nsIAtom* LandmarkRole() const;
-
-  nsIAtom* ARIARoleAtom() const;
-
-  int32_t GetLevelInternal();
-  void ScrollTo(uint32_t aScrollType);
-  void ScrollToPoint(uint32_t aScrollType, int32_t aX, int32_t aY);
-
-  int32_t CaretLineNumber();
-  int32_t CaretOffset();
-  void SetCaretOffset(int32_t aOffset);
-
-  int32_t CharacterCount();
-  int32_t SelectionCount();
-
-  /**
-   * Get the text between the given offsets.
-   */
-  bool TextSubstring(int32_t aStartOffset, int32_t aEndOfset,
-                     nsString& aText) const;
-
-  void GetTextAfterOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
-                          nsString& aText, int32_t* aStartOffset,
-                          int32_t* aEndOffset);
-
-  void GetTextAtOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
-                       nsString& aText, int32_t* aStartOffset,
-                       int32_t* aEndOffset);
-
-  void GetTextBeforeOffset(int32_t aOffset, AccessibleTextBoundary aBoundaryType,
-                           nsString& aText, int32_t* aStartOffset,
-                           int32_t* aEndOffset);
-
-  char16_t CharAt(int32_t aOffset);
-
-  void TextAttributes(bool aIncludeDefAttrs,
-                      const int32_t aOffset,
-                      nsTArray<Attribute>* aAttributes,
-                      int32_t* aStartOffset,
-                      int32_t* aEndOffset);
-  void DefaultTextAttributes(nsTArray<Attribute>* aAttrs);
-
-  nsIntRect TextBounds(int32_t aStartOffset, int32_t aEndOffset,
-                       uint32_t aCoordType = nsIAccessibleCoordinateType::COORDTYPE_SCREEN_RELATIVE);
-
-  nsIntRect CharBounds(int32_t aOffset, uint32_t aCoordType);
-
-  int32_t OffsetAtPoint(int32_t aX, int32_t aY, uint32_t aCoordType);
-
-  bool SelectionBoundsAt(int32_t aSelectionNum,
-                         nsString& aData,
-                         int32_t* aStartOffset,
-                         int32_t* aEndOffset);
-
-  bool SetSelectionBoundsAt(int32_t aSelectionNum,
-                            int32_t aStartOffset,
-                            int32_t aEndOffset);
-
-  bool AddToSelection(int32_t aStartOffset,
-                      int32_t aEndOffset);
-
-  bool RemoveFromSelection(int32_t aSelectionNum);
-
-  void ScrollSubstringTo(int32_t aStartOffset, int32_t aEndOffset,
-                         uint32_t aScrollType);
-
-  void ScrollSubstringToPoint(int32_t aStartOffset,
-                              int32_t aEndOffset,
-                              uint32_t aCoordinateType,
-                              int32_t aX, int32_t aY);
-
-  void Text(nsString* aText);
-
-  void ReplaceText(const nsString& aText);
-
-  bool InsertText(const nsString& aText, int32_t aPosition);
-
-  bool CopyText(int32_t aStartPos, int32_t aEndPos);
-
-  bool CutText(int32_t aStartPos, int32_t aEndPos);
-
-  bool DeleteText(int32_t aStartPos, int32_t aEndPos);
-
-  bool PasteText(int32_t aPosition);
-
-  nsIntPoint ImagePosition(uint32_t aCoordType);
-
-  nsIntSize ImageSize();
-
-  uint32_t StartOffset(bool* aOk);
-
-  uint32_t EndOffset(bool* aOk);
-
-  bool IsLinkValid();
-
-  // XXX checking mRole alone may not result in same behavior as Accessibles
-  // due to ARIA roles. See bug 1210477.
-  inline bool IsTable() const
-  {
-    return mRole == roles::TABLE || mRole == roles::MATHML_TABLE;
-  }
-  inline bool IsTableRow() const
-  {
-    return (mRole == roles::ROW ||
-            mRole == roles::MATHML_TABLE_ROW ||
-            mRole == roles::MATHML_LABELED_ROW);
-  }
-  inline bool IsTableCell() const
-  {
-    return (mRole == roles::CELL ||
-            mRole == roles::COLUMNHEADER ||
-            mRole == roles::ROWHEADER ||
-            mRole == roles::GRID_CELL ||
-            mRole == roles::MATHML_CELL);
-  }
-
-  uint32_t AnchorCount(bool* aOk);
-
-  void AnchorURIAt(uint32_t aIndex, nsCString& aURI, bool* aOk);
-
-  ProxyAccessible* AnchorAt(uint32_t aIndex);
-
-  uint32_t LinkCount();
-
-  ProxyAccessible* LinkAt(const uint32_t& aIndex);
-
-  int32_t LinkIndexOf(ProxyAccessible* aLink);
-
-  int32_t LinkIndexAtOffset(uint32_t aOffset);
-
-  ProxyAccessible* TableOfACell();
-
-  uint32_t ColIdx();
-
-  uint32_t RowIdx();
-
-  uint32_t ColExtent();
-
-  uint32_t RowExtent();
-
-  void ColHeaderCells(nsTArray<ProxyAccessible*>* aCells);
-
-  void RowHeaderCells(nsTArray<ProxyAccessible*>* aCells);
-
-  bool IsCellSelected();
-
-  ProxyAccessible* TableCaption();
-  void TableSummary(nsString& aSummary);
-  uint32_t TableColumnCount();
-  uint32_t TableRowCount();
-  ProxyAccessible* TableCellAt(uint32_t aRow, uint32_t aCol);
-  int32_t TableCellIndexAt(uint32_t aRow, uint32_t aCol);
-  int32_t TableColumnIndexAt(uint32_t aCellIndex);
-  int32_t TableRowIndexAt(uint32_t aCellIndex);
-  void TableRowAndColumnIndicesAt(uint32_t aCellIndex,
-                                  int32_t* aRow, int32_t* aCol);
-  uint32_t TableColumnExtentAt(uint32_t aRow, uint32_t aCol);
-  uint32_t TableRowExtentAt(uint32_t aRow, uint32_t aCol);
-  void TableColumnDescription(uint32_t aCol, nsString& aDescription);
-  void TableRowDescription(uint32_t aRow, nsString& aDescription);
-  bool TableColumnSelected(uint32_t aCol);
-  bool TableRowSelected(uint32_t aRow);
-  bool TableCellSelected(uint32_t aRow, uint32_t aCol);
-  uint32_t TableSelectedCellCount();
-  uint32_t TableSelectedColumnCount();
-  uint32_t TableSelectedRowCount();
-  void TableSelectedCells(nsTArray<ProxyAccessible*>* aCellIDs);
-  void TableSelectedCellIndices(nsTArray<uint32_t>* aCellIndices);
-  void TableSelectedColumnIndices(nsTArray<uint32_t>* aColumnIndices);
-  void TableSelectedRowIndices(nsTArray<uint32_t>* aRowIndices);
-  void TableSelectColumn(uint32_t aCol);
-  void TableSelectRow(uint32_t aRow);
-  void TableUnselectColumn(uint32_t aCol);
-  void TableUnselectRow(uint32_t aRow);
-  bool TableIsProbablyForLayout();
-  ProxyAccessible* AtkTableColumnHeader(int32_t aCol);
-  ProxyAccessible* AtkTableRowHeader(int32_t aRow);
-
-  void SelectedItems(nsTArray<ProxyAccessible*>* aSelectedItems);
-  uint32_t SelectedItemCount();
-  ProxyAccessible* GetSelectedItem(uint32_t aIndex);
-  bool IsItemSelected(uint32_t aIndex);
-  bool AddItemToSelection(uint32_t aIndex);
-  bool RemoveItemFromSelection(uint32_t aIndex);
-  bool SelectAll();
-  bool UnselectAll();
-
-  void TakeSelection();
-  void SetSelected(bool aSelect);
-
-  bool DoAction(uint8_t aIndex);
-  uint8_t ActionCount();
-  void ActionDescriptionAt(uint8_t aIndex, nsString& aDescription);
-  void ActionNameAt(uint8_t aIndex, nsString& aName);
-  KeyBinding AccessKey();
-  KeyBinding KeyboardShortcut();
-  void AtkKeyBinding(nsString& aBinding);
-
-  double CurValue();
-  bool SetCurValue(double aValue);
-  double MinValue();
-  double MaxValue();
-  double Step();
-
-  void TakeFocus();
-  ProxyAccessible* FocusedChild();
-  ProxyAccessible* ChildAtPoint(int32_t aX, int32_t aY,
-                                Accessible::EWhichChildAtPoint aWhichChild);
   nsIntRect Bounds();
 
   void Language(nsString& aLocale);
-  void DocType(nsString& aType);
-  void Title(nsString& aTitle);
-  void URL(nsString& aURL);
-  void MimeType(nsString aMime);
-  void URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
-                          nsString& aMimeType);
 
-  ProxyAccessible* AccessibleAtPoint(int32_t aX, int32_t aY,
-                                     bool aNeedsScreenCoords);
-
-  void Extents(bool aNeedsScreenCoords, int32_t* aX, int32_t* aY,
-               int32_t* aWidth, int32_t* aHeight);
-
-  /**
-   * Return the id of the dom node this accessible represents.  Note this
-   * should probably only be used for testing.
-   */
-  void DOMNodeID(nsString& aID);
-
-  /**
-   * Allow the platform to store a pointers worth of data on us.
-   */
-  uintptr_t GetWrapper() const { return mWrapper; }
-  void SetWrapper(uintptr_t aWrapper) { mWrapper = aWrapper; }
-
-  /*
-   * Return the ID of the accessible being proxied.
-   */
-  uint64_t ID() const { return mID; }
-
-  /**
-   * Return the document containing this proxy, or the proxy itself if it is a
-   * document.
-   */
-  DocAccessibleParent* Document() const { return mDoc; }
-
-  /**
-   * Return true if this proxy is a DocAccessibleParent.
-   */
-  bool IsDoc() const { return mIsDoc; }
-  DocAccessibleParent* AsDoc() const { return IsDoc() ? mDoc : nullptr; }
+  bool GetCOMInterface(void** aOutAccessible) const;
 
 protected:
-  explicit ProxyAccessible(DocAccessibleParent* aThisAsDoc) :
-    mParent(nullptr), mDoc(aThisAsDoc), mWrapper(0), mID(0),
-    mRole(roles::DOCUMENT), mOuterDoc(false), mIsDoc(true), mHasValue(false),
-    mIsHyperLink(false), mIsHyperText(false)
-  { MOZ_COUNT_CTOR(ProxyAccessible); }
+  explicit ProxyAccessible(DocAccessibleParent* aThisAsDoc)
+    : ProxyAccessibleBase(aThisAsDoc)
+  { MOZ_COUNT_CTOR(ProxyAccessibleBase); }
 
-protected:
-  ProxyAccessible* mParent;
+  void SetCOMInterface(const RefPtr<IAccessible>& aIAccessible)
+  { mCOMProxy = aIAccessible; }
 
 private:
-  nsTArray<ProxyAccessible*> mChildren;
-  DocAccessibleParent* mDoc;
-  uintptr_t mWrapper;
-  uint64_t mID;
-protected:
-  // XXX DocAccessibleParent gets to change this to change the role of
-  // documents.
-  role mRole : 27;
-private:
-  bool mOuterDoc : 1;
-
-public:
-  const bool mIsDoc: 1;
-  const bool mHasValue: 1;
-  const bool mIsHyperLink: 1;
-  const bool mIsHyperText: 1;
+  RefPtr<IAccessible> mCOMProxy;
 };
 
 }
 }
 
 #endif
--- a/accessible/ipc/win/moz.build
+++ b/accessible/ipc/win/moz.build
@@ -7,21 +7,23 @@
 IPDL_SOURCES += ['PDocAccessible.ipdl']
 
 # with --disable-accessibility we need to compile PDocAccessible.ipdl, but not
 # the C++.
 if CONFIG['ACCESSIBILITY']:
     EXPORTS.mozilla.a11y += [
         'COMPtrTypes.h',
         'DocAccessibleChild.h',
+        'ProxyAccessible.h'
     ]
 
     SOURCES += [
         'COMPtrTypes.cpp',
         'DocAccessibleChild.cpp',
+        'ProxyAccessible.cpp',
     ]
 
     LOCAL_INCLUDES += [
         '/accessible/base',
         '/accessible/generic',
         '/accessible/windows/ia2',
         '/accessible/windows/msaa',
         '/accessible/xpcom',
--- a/accessible/windows/ProxyWrappers.h
+++ b/accessible/windows/ProxyWrappers.h
@@ -10,45 +10,55 @@
 
 #include "HyperTextAccessible.h"
 
 namespace mozilla {
 namespace a11y {
 
 class ProxyAccessibleWrap : public AccessibleWrap
 {
-  public:
+public:
   ProxyAccessibleWrap(ProxyAccessible* aProxy) :
     AccessibleWrap(nullptr, nullptr)
   {
     mType = eProxyType;
     mBits.proxy = aProxy;
   }
 
   virtual void Shutdown() override
   {
     mBits.proxy = nullptr;
     mStateFlags |= eIsDefunct;
   }
+
+  virtual void GetNativeInterface(void** aOutAccessible) override
+  {
+    mBits.proxy->GetCOMInterface(aOutAccessible);
+  }
 };
 
 class HyperTextProxyAccessibleWrap : public HyperTextAccessibleWrap
 {
 public:
   HyperTextProxyAccessibleWrap(ProxyAccessible* aProxy) :
     HyperTextAccessibleWrap(nullptr, nullptr)
   {
     mType = eProxyType;
     mBits.proxy = aProxy;
   }
 
   virtual void Shutdown() override
   {
     mBits.proxy = nullptr;
- mStateFlags |= eIsDefunct;
+    mStateFlags |= eIsDefunct;
+  }
+
+  virtual void GetNativeInterface(void** aOutAccessible) override
+  {
+    mBits.proxy->GetCOMInterface(aOutAccessible);
   }
 };
 
 class DocProxyAccessibleWrap : public HyperTextProxyAccessibleWrap
 {
 public:
   DocProxyAccessibleWrap(ProxyAccessible* aProxy) :
     HyperTextProxyAccessibleWrap(aProxy)
--- a/accessible/xpcom/xpcAccessibleDocument.h
+++ b/accessible/xpcom/xpcAccessibleDocument.h
@@ -91,16 +91,17 @@ private:
     }
 
     mCache.Remove(aProxy);
   }
 
   friend class DocManager;
   friend class DocAccessible;
   friend class ProxyAccessible;
+  friend class ProxyAccessibleBase<ProxyAccessible>;
 
   xpcAccessibleDocument(const xpcAccessibleDocument&) = delete;
   xpcAccessibleDocument& operator =(const xpcAccessibleDocument&) = delete;
 
   nsRefPtrHashtable<nsPtrHashKey<const void>, xpcAccessibleGeneric> mCache;
   bool mRemote;
 };