Backed out changeset a11adf1705ec (bug 982842) for causing bug 1075387
authorCarsten "Tomcat" Book <cbook@mozilla.com>
Wed, 01 Oct 2014 14:41:56 +0200
changeset 231259 49d21726b9dd31baebc7f941f0083a65e56fdbd2
parent 231258 14665b1de5ee8926ec632f399e7f1c7dbc5ed3e8
child 231319 fe0afc101ad2760a8b891c1b91a875b077b1de80
push id4187
push userbhearsum@mozilla.com
push dateFri, 28 Nov 2014 15:29:12 +0000
treeherdermozilla-beta@f23cc6a30c11 [default view] [failures only]
perfherder[talos] [build metrics] [platform microbench] (compared to previous push)
bugs982842, 1075387
milestone35.0a1
backs outa11adf1705ec702e75b493060fa7a5e18b15145a
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
Backed out changeset a11adf1705ec (bug 982842) for causing bug 1075387
accessible/atk/AccessibleWrap.cpp
accessible/atk/AccessibleWrap.h
accessible/atk/moz.build
accessible/atk/nsMai.h
accessible/base/AccEvent.h
accessible/base/DocManager.cpp
accessible/base/DocManager.h
accessible/base/EventQueue.cpp
accessible/base/NotificationController.cpp
accessible/base/Platform.h
accessible/base/Role.h
accessible/base/moz.build
accessible/generic/DocAccessible.cpp
accessible/generic/DocAccessible.h
accessible/generic/moz.build
accessible/ipc/DocAccessibleChild.cpp
accessible/ipc/DocAccessibleChild.h
accessible/ipc/DocAccessibleParent.cpp
accessible/ipc/DocAccessibleParent.h
accessible/ipc/PDocAccessible.ipdl
accessible/ipc/ProxyAccessible.cpp
accessible/ipc/ProxyAccessible.h
accessible/ipc/moz.build
accessible/mac/Platform.mm
accessible/moz.build
accessible/other/Platform.cpp
accessible/windows/msaa/Platform.cpp
dom/ipc/ContentChild.cpp
dom/ipc/ContentChild.h
dom/ipc/ContentParent.cpp
dom/ipc/ContentParent.h
dom/ipc/PContent.ipdl
--- a/accessible/atk/AccessibleWrap.cpp
+++ b/accessible/atk/AccessibleWrap.cpp
@@ -7,26 +7,24 @@
 #include "AccessibleWrap.h"
 
 #include "Accessible-inl.h"
 #include "ApplicationAccessibleWrap.h"
 #include "InterfaceInitFuncs.h"
 #include "nsAccUtils.h"
 #include "nsIAccessibleRelation.h"
 #include "nsIAccessibleTable.h"
-#include "ProxyAccessible.h"
 #include "RootAccessible.h"
 #include "nsIAccessibleValue.h"
 #include "nsMai.h"
 #include "nsMaiHyperlink.h"
 #include "nsString.h"
 #include "nsAutoPtr.h"
 #include "prprf.h"
 #include "nsStateMap.h"
-#include "mozilla/a11y/Platform.h"
 #include "Relation.h"
 #include "RootAccessible.h"
 #include "States.h"
 #include "nsISimpleEnumerator.h"
 
 #include "mozilla/ArrayUtils.h"
 #include "nsXPCOMStrings.h"
 #include "nsComponentManagerUtils.h"
@@ -130,23 +128,19 @@ static const GInterfaceInfo atk_if_infos
  */
 struct MaiAtkObject
 {
   AtkObject parent;
   /*
    * The AccessibleWrap whose properties and features are exported
    * via this object instance.
    */
-  uintptr_t accWrap;
+  AccessibleWrap* accWrap;
 };
 
-// This is or'd with the pointer in MaiAtkObject::accWrap if the wrap-ee is a
-// proxy.
-static const uintptr_t IS_PROXY = 1;
-
 struct MaiAtkObjectClass
 {
     AtkObjectClass parent_class;
 };
 
 static guint mai_atk_object_signals [LAST_SIGNAL] = { 0, };
 
 static void MaybeFireNameChange(AtkObject* aAtkObj, const nsString& aNewName);
@@ -249,17 +243,17 @@ AccessibleWrap::~AccessibleWrap()
     NS_ASSERTION(!mAtkObject, "ShutdownAtkObject() is not called");
 }
 
 void
 AccessibleWrap::ShutdownAtkObject()
 {
     if (mAtkObject) {
         if (IS_MAI_OBJECT(mAtkObject)) {
-            MAI_ATK_OBJECT(mAtkObject)->accWrap = 0;
+            MAI_ATK_OBJECT(mAtkObject)->accWrap = nullptr;
         }
         SetMaiHyperlink(nullptr);
         g_object_unref(mAtkObject);
         mAtkObject = nullptr;
     }
 }
 
 void
@@ -583,25 +577,26 @@ initializeCB(AtkObject *aAtkObj, gpointe
     /* AtkObjectClass has not a "initialize" function now,
      * maybe it has later
      */
 
     if (ATK_OBJECT_CLASS(parent_class)->initialize)
         ATK_OBJECT_CLASS(parent_class)->initialize(aAtkObj, aData);
 
   /* initialize object */
-  MAI_ATK_OBJECT(aAtkObj)->accWrap = reinterpret_cast<uintptr_t>(aData);
+  MAI_ATK_OBJECT(aAtkObj)->accWrap =
+    static_cast<AccessibleWrap*>(aData);
 }
 
 void
 finalizeCB(GObject *aObj)
 {
     if (!IS_MAI_OBJECT(aObj))
         return;
-    NS_ASSERTION(MAI_ATK_OBJECT(aObj)->accWrap == 0, "AccWrap NOT null");
+    NS_ASSERTION(MAI_ATK_OBJECT(aObj)->accWrap == nullptr, "AccWrap NOT null");
 
     // call parent finalize function
     // finalize of GObjectClass will unref the accessible parent if has
     if (G_OBJECT_CLASS (parent_class)->finalize)
         G_OBJECT_CLASS (parent_class)->finalize(aObj);
 }
 
 const gchar*
@@ -663,43 +658,35 @@ getDescriptionCB(AtkObject *aAtkObj)
                                    NS_ConvertUTF16toUTF8(uniDesc).get());
 
     return aAtkObj->description;
 }
 
 AtkRole
 getRoleCB(AtkObject *aAtkObj)
 {
+  AccessibleWrap* accWrap = GetAccessibleWrap(aAtkObj);
+  if (!accWrap)
+    return ATK_ROLE_INVALID;
+
+#ifdef DEBUG
+  NS_ASSERTION(nsAccUtils::IsTextInterfaceSupportCorrect(accWrap),
+      "Does not support nsIAccessibleText when it should");
+#endif
+
   if (aAtkObj->role != ATK_ROLE_INVALID)
     return aAtkObj->role;
 
-  AccessibleWrap* accWrap = GetAccessibleWrap(aAtkObj);
-  a11y::role role;
-  if (!accWrap) {
-    ProxyAccessible* proxy = GetProxy(aAtkObj);
-    if (!proxy)
-      return ATK_ROLE_INVALID;
-
-    role = proxy->Role();
-  } else {
-#ifdef DEBUG
-    NS_ASSERTION(nsAccUtils::IsTextInterfaceSupportCorrect(accWrap),
-                 "Does not support nsIAccessibleText when it should");
-#endif
-
-    role = accWrap->Role();
-  }
-
 #define ROLE(geckoRole, stringRole, atkRole, macRole, \
              msaaRole, ia2Role, nameRule) \
   case roles::geckoRole: \
     aAtkObj->role = atkRole; \
     break;
 
-  switch (role) {
+  switch (accWrap->Role()) {
 #include "RoleMap.h"
     default:
       MOZ_CRASH("Unknown role.");
   };
 
 #undef ROLE
 
   if (aAtkObj->role == ATK_ROLE_LIST_BOX && !IsAtkVersionAtLeast(2, 1))
@@ -954,80 +941,31 @@ refRelationSetCB(AtkObject *aAtkObj)
 }
 
 // Check if aAtkObj is a valid MaiAtkObject, and return the AccessibleWrap
 // for it.
 AccessibleWrap*
 GetAccessibleWrap(AtkObject* aAtkObj)
 {
   NS_ENSURE_TRUE(IS_MAI_OBJECT(aAtkObj), nullptr);
-
-  // Make sure its native is an AccessibleWrap not a proxy.
-  if (MAI_ATK_OBJECT(aAtkObj)->accWrap & IS_PROXY)
-    return nullptr;
-
-    AccessibleWrap* accWrap =
-      reinterpret_cast<AccessibleWrap*>(MAI_ATK_OBJECT(aAtkObj)->accWrap);
+  AccessibleWrap* accWrap = MAI_ATK_OBJECT(aAtkObj)->accWrap;
 
   // Check if the accessible was deconstructed.
   if (!accWrap)
     return nullptr;
 
   NS_ENSURE_TRUE(accWrap->GetAtkObject() == aAtkObj, nullptr);
 
   AccessibleWrap* appAccWrap = ApplicationAcc();
   if (appAccWrap != accWrap && !accWrap->IsValidObject())
     return nullptr;
 
   return accWrap;
 }
 
-ProxyAccessible*
-GetProxy(AtkObject* aObj)
-{
-  if (!aObj || !(MAI_ATK_OBJECT(aObj)->accWrap & IS_PROXY))
-    return nullptr;
-
-  return reinterpret_cast<ProxyAccessible*>(MAI_ATK_OBJECT(aObj)->accWrap
-      & ~IS_PROXY);
-}
-
-static uint16_t
-GetInterfacesForProxy(ProxyAccessible* aProxy)
-{
-  return MAI_INTERFACE_COMPONENT;
-}
-
-void
-a11y::ProxyCreated(ProxyAccessible* aProxy)
-{
-  GType type = GetMaiAtkType(GetInterfacesForProxy(aProxy));
-  NS_ASSERTION(type, "why don't we have a type!");
-
-  AtkObject* obj =
-    reinterpret_cast<AtkObject *>
-    (g_object_new(type, nullptr));
-  if (!obj)
-    return;
-
-  atk_object_initialize(obj, aProxy);
-  obj->role = ATK_ROLE_INVALID;
-  obj->layer = ATK_LAYER_INVALID;
-  aProxy->SetWrapper(reinterpret_cast<uintptr_t>(obj) | IS_PROXY);
-}
-
-void
-a11y::ProxyDestroyed(ProxyAccessible* aProxy)
-{
-  auto obj = reinterpret_cast<MaiAtkObject*>(aProxy->GetWrapper() & ~IS_PROXY);
-  obj->accWrap = 0;
-  g_object_unref(obj);
-  aProxy->SetWrapper(0);
-}
-
 nsresult
 AccessibleWrap::HandleAccEvent(AccEvent* aEvent)
 {
   nsresult rv = Accessible::HandleAccEvent(aEvent);
   NS_ENSURE_SUCCESS(rv, rv);
 
     Accessible* accessible = aEvent->GetAccessible();
     NS_ENSURE_TRUE(accessible, NS_ERROR_FAILURE);
--- a/accessible/atk/AccessibleWrap.h
+++ b/accessible/atk/AccessibleWrap.h
@@ -92,15 +92,15 @@ private:
   enum EAvailableAtkSignals {
     eUnknown,
     eHaveNewAtkTextSignals,
     eNoNewAtkSignals
   };
 
   static EAvailableAtkSignals gAvailableAtkSignals;
 
-  uint16_t CreateMaiInterfaces();
+  uint16_t CreateMaiInterfaces(void);
 };
 
 } // namespace a11y
 } // namespace mozilla
 
 #endif /* __NS_ACCESSIBLE_WRAP_H__ */
--- a/accessible/atk/moz.build
+++ b/accessible/atk/moz.build
@@ -30,17 +30,16 @@ SOURCES += [
     'RootAccessibleWrap.cpp',
     'UtilInterface.cpp',
 ]
 
 LOCAL_INCLUDES += [
     '/accessible/base',
     '/accessible/generic',
     '/accessible/html',
-    '/accessible/ipc',
     '/accessible/xpcom',
     '/accessible/xul',
     '/other-licenses/atk-1.0',
 ]
 
 FINAL_LIBRARY = 'xul'
 
 if CONFIG['MOZ_ENABLE_GTK']:
--- a/accessible/atk/nsMai.h
+++ b/accessible/atk/nsMai.h
@@ -8,39 +8,32 @@
 #define __NS_MAI_H__
 
 #include <atk/atk.h>
 #include <glib.h>
 #include <glib-object.h>
 
 #include "AccessibleWrap.h"
 
-namespace mozilla {
-namespace a11y {
-class ProxyAccessible;
-}
-}
-
 #define MAI_TYPE_ATK_OBJECT             (mai_atk_object_get_type ())
 #define MAI_ATK_OBJECT(obj)             (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
                                          MAI_TYPE_ATK_OBJECT, MaiAtkObject))
 #define MAI_ATK_OBJECT_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), \
                                          MAI_TYPE_ATK_OBJECT, \
                                          MaiAtkObjectClass))
 #define IS_MAI_OBJECT(obj)              (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
                                          MAI_TYPE_ATK_OBJECT))
 #define IS_MAI_OBJECT_CLASS(klass)      (G_TYPE_CHECK_CLASS_TYPE ((klass), \
                                          MAI_TYPE_ATK_OBJECT))
 #define MAI_ATK_OBJECT_GET_CLASS(obj)   (G_TYPE_INSTANCE_GET_CLASS ((obj), \
                                          MAI_TYPE_ATK_OBJECT, \
                                          MaiAtkObjectClass))
 GType mai_atk_object_get_type(void);
 GType mai_util_get_type();
 mozilla::a11y::AccessibleWrap* GetAccessibleWrap(AtkObject* aAtkObj);
-mozilla::a11y::ProxyAccessible* GetProxy(AtkObject* aAtkObj);
 
 extern int atkMajorVersion, atkMinorVersion;
 
 /**
  * Return true if the loaded version of libatk-1.0.so is at least
  * aMajor.aMinor.0.
  */
 static inline bool
--- a/accessible/base/AccEvent.h
+++ b/accessible/base/AccEvent.h
@@ -227,18 +227,16 @@ public:
   {
     return AccEvent::GetEventGroups() | (1U << eMutationEvent);
   }
 
   // MutationEvent
   bool IsShow() const { return mEventType == nsIAccessibleEvent::EVENT_SHOW; }
   bool IsHide() const { return mEventType == nsIAccessibleEvent::EVENT_HIDE; }
 
-  Accessible* Parent() const { return mParent; }
-
 protected:
   nsCOMPtr<nsINode> mNode;
   nsRefPtr<Accessible> mParent;
   nsRefPtr<AccTextChangeEvent> mTextChangeEvent;
 
   friend class EventQueue;
 };
 
--- a/accessible/base/DocManager.cpp
+++ b/accessible/base/DocManager.cpp
@@ -3,17 +3,16 @@
  * 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 "DocManager.h"
 
 #include "ApplicationAccessible.h"
 #include "ARIAMap.h"
 #include "DocAccessible-inl.h"
-#include "DocAccessibleChild.h"
 #include "nsAccessibilityService.h"
 #include "RootAccessibleWrap.h"
 
 #ifdef A11Y_LOG
 #include "Logging.h"
 #endif
 
 #include "mozilla/EventListenerManager.h"
@@ -23,18 +22,16 @@
 #include "nsIChannel.h"
 #include "nsIDOMDocument.h"
 #include "nsIDOMWindow.h"
 #include "nsIInterfaceRequestorUtils.h"
 #include "nsIWebNavigation.h"
 #include "nsServiceManagerUtils.h"
 #include "nsIWebProgress.h"
 #include "nsCoreUtils.h"
-#include "nsXULAppAPI.h"
-#include "mozilla/dom/ContentChild.h"
 
 using namespace mozilla;
 using namespace mozilla::a11y;
 using namespace mozilla::dom;
 
 ////////////////////////////////////////////////////////////////////////////////
 // DocManager
 ////////////////////////////////////////////////////////////////////////////////
@@ -416,22 +413,16 @@ DocManager::CreateDocOrRootAccessible(ns
     // the tree. The reorder event is delivered after the document tree is
     // constructed because event processing and tree construction are done by
     // the same document.
     // Note: don't use AccReorderEvent to avoid coalsecense and special reorder
     // events processing.
     docAcc->FireDelayedEvent(nsIAccessibleEvent::EVENT_REORDER,
                              ApplicationAcc());
 
-    if (XRE_GetProcessType() != GeckoProcessType_Default) {
-      DocAccessibleChild* ipcDoc = new DocAccessibleChild(docAcc);
-      docAcc->SetIPCDoc(ipcDoc);
-    auto contentChild = dom::ContentChild::GetSingleton();
-    contentChild->SendPDocAccessibleConstructor(ipcDoc, nullptr, 0);
-    }
   } else {
     parentDocAcc->BindChildDocument(docAcc);
   }
 
 #ifdef A11Y_LOG
   if (logging::IsEnabled(logging::eDocCreate)) {
     logging::DocCreate("document creation finished", aDocument);
     logging::Stack();
--- a/accessible/base/DocManager.h
+++ b/accessible/base/DocManager.h
@@ -12,17 +12,16 @@
 #include "nsWeakReference.h"
 #include "nsIPresShell.h"
 
 namespace mozilla {
 namespace a11y {
 
 class Accessible;
 class DocAccessible;
-class DocAccessibleParent;
 
 /**
  * Manage the document accessible life cycle.
  */
 class DocManager : public nsIWebProgressListener,
                    public nsIDOMEventListener,
                    public nsSupportsWeakReference
 {
@@ -61,35 +60,16 @@ public:
    * Called by document accessible when it gets shutdown.
    */
   inline void NotifyOfDocumentShutdown(nsIDocument* aDocument)
   {
     mDocAccessibleCache.Remove(aDocument);
     RemoveListeners(aDocument);
   }
 
-  /*
-   * Notification that a top level document in a content process has gone away.
-   */
-  void RemoteDocShutdown(DocAccessibleParent* aDoc)
-  {
-    DebugOnly<bool> result = mRemoteDocuments.RemoveElement(aDoc);
-    MOZ_ASSERT(result, "Why didn't we find the document!");
-  }
-
-  /*
-   * Notify of a new top level document in a content process.
-   */
-  void RemoteDocAdded(DocAccessibleParent* aDoc)
-  {
-    MOZ_ASSERT(!mRemoteDocuments.Contains(aDoc),
-               "How did we already have the doc!");
-    mRemoteDocuments.AppendElement(aDoc);
-  }
-
 #ifdef DEBUG
   bool IsProcessingRefreshDriverNotification() const;
 #endif
 
 protected:
   DocManager();
   virtual ~DocManager() { }
 
@@ -159,21 +139,16 @@ private:
 
 #ifdef DEBUG
   static PLDHashOperator
     SearchIfDocIsRefreshing(const nsIDocument* aKey,
                             DocAccessible* aDocAccessible, void* aUserArg);
 #endif
 
   DocAccessibleHashtable mDocAccessibleCache;
-
-  /*
-   * The list of remote top level documents.
-   */
-  nsTArray<DocAccessibleParent*> mRemoteDocuments;
 };
 
 /**
  * Return the existing document accessible for the document if any.
  * Note this returns the doc accessible for the primary pres shell if there is
  * more than one.
  */
 inline DocAccessible*
--- a/accessible/base/EventQueue.cpp
+++ b/accessible/base/EventQueue.cpp
@@ -3,17 +3,16 @@
  * 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 "EventQueue.h"
 
 #include "Accessible-inl.h"
 #include "nsEventShell.h"
 #include "DocAccessible.h"
-#include "DocAccessibleChild.h"
 #include "nsAccessibilityService.h"
 #include "nsTextEquivUtils.h"
 #ifdef A11Y_LOG
 #include "Logging.h"
 #endif
 
 using namespace mozilla;
 using namespace mozilla::a11y;
@@ -551,20 +550,10 @@ EventQueue::ProcessEventQueue()
       }
     }
 
     if (event->mEventType == nsIAccessibleEvent::EVENT_HIDE)
       mDocument->ShutdownChildrenInSubtree(event->mAccessible);
 
     if (!mDocument)
       return;
-
-    if (XRE_GetProcessType() != GeckoProcessType_Default) {
-    DocAccessibleChild* ipcDoc = mDocument->IPCDoc();
-      if (event->mEventType == nsIAccessibleEvent::EVENT_SHOW)
-        ipcDoc->ShowEvent(downcast_accEvent(event));
-      else if (event->mEventType == nsIAccessibleEvent::EVENT_HIDE)
-        ipcDoc->SendHideEvent(reinterpret_cast<uintptr_t>(event->GetAccessible()));
-      else
-        ipcDoc->SendEvent(event->GetEventType());
-    }
   }
 }
--- a/accessible/base/NotificationController.cpp
+++ b/accessible/base/NotificationController.cpp
@@ -1,21 +1,19 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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 "NotificationController.h"
 
 #include "DocAccessible-inl.h"
-#include "DocAccessibleChild.h"
 #include "TextLeafAccessible.h"
 #include "TextUpdater.h"
 
-#include "mozilla/dom/ContentChild.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/Telemetry.h"
 
 using namespace mozilla;
 using namespace mozilla::a11y;
 
 ////////////////////////////////////////////////////////////////////////////////
 // NotificationCollector
@@ -214,29 +212,18 @@ NotificationController::WillRefresh(mozi
     if (childDoc->IsDefunct())
       continue;
 
     nsIContent* ownerContent = mDocument->DocumentNode()->
       FindContentForSubDocument(childDoc->DocumentNode());
     if (ownerContent) {
       Accessible* outerDocAcc = mDocument->GetAccessible(ownerContent);
       if (outerDocAcc && outerDocAcc->AppendChild(childDoc)) {
-        if (mDocument->AppendChildDocument(childDoc)) {
-          if (XRE_GetProcessType() != GeckoProcessType_Default) {
-            DocAccessibleChild* ipcDoc = new DocAccessibleChild(childDoc);
-            childDoc->SetIPCDoc(ipcDoc);
-            auto contentChild = dom::ContentChild::GetSingleton();
-            DocAccessibleChild* parentIPCDoc = mDocument->IPCDoc();
-            uint64_t id = reinterpret_cast<uintptr_t>(outerDocAcc->UniqueID());
-            contentChild->SendPDocAccessibleConstructor(ipcDoc, parentIPCDoc,
-                                                        id);
-          }
-
+        if (mDocument->AppendChildDocument(childDoc))
           continue;
-        }
 
         outerDocAcc->RemoveChild(childDoc);
       }
 
       // Failed to bind the child document, destroy it.
       childDoc->Shutdown();
     }
   }
--- a/accessible/base/Platform.h
+++ b/accessible/base/Platform.h
@@ -2,18 +2,16 @@
 /* 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/. */
 
 namespace mozilla {
 namespace a11y {
 
-class ProxyAccessible;
-
 enum EPlatformDisabledState {
   ePlatformIsForceEnabled = -1,
   ePlatformIsEnabled = 0,
   ePlatformIsDisabled = 1
 };
 
 /**
  * Return the platform disabled state.
@@ -44,22 +42,11 @@ bool ShouldA11yBeEnabled();
 void PlatformInit();
 
 /**
  * Shutdown platform accessibility.
  * Note this is called before internal accessibility support is shutdown.
  */
 void PlatformShutdown();
 
-/**
- * called when a new ProxyAccessible is created, so the platform may setup a
- * wrapper for it, or take other action.
- */
-void ProxyCreated(ProxyAccessible*);
-
-/**
- * Called just before a ProxyAccessible is destroyed so its wrapper can be
- * disposed of and other action taken.
- */
-void ProxyDestroyed(ProxyAccessible*);
 } // namespace a11y
 } // namespace mozilla
 
--- a/accessible/base/Role.h
+++ b/accessible/base/Role.h
@@ -778,19 +778,17 @@ enum Role {
   /**
    * Represent a definition in a definition list (dd in HTML)
    */
   DEFINITION = 128,
 
   /**
    * Represent a keyboard or keypad key (ARIA role "key").
    */
-  KEY = 129,
-
-  LAST_ROLE = KEY
+  KEY = 129
 };
 
 } // namespace role
 
 typedef enum mozilla::a11y::roles::Role role;
 
 } // namespace a11y
 } // namespace mozilla
--- a/accessible/base/moz.build
+++ b/accessible/base/moz.build
@@ -55,17 +55,16 @@ UNIFIED_SOURCES += [
 if CONFIG['A11Y_LOG']:
     UNIFIED_SOURCES += [
         'Logging.cpp',
     ]
 
 LOCAL_INCLUDES += [
     '/accessible/generic',
     '/accessible/html',
-    '/accessible/ipc',
     '/accessible/xpcom',
     '/accessible/xul',
     '/dom/xbl',
     '/ipc/chromium/src',
     '/layout/generic',
     '/layout/style',
     '/layout/svg',
     '/layout/xul',
@@ -89,10 +88,8 @@ else:
     LOCAL_INCLUDES += [
         '/accessible/other',
     ]
 
 FINAL_LIBRARY = 'xul'
 
 if CONFIG['MOZ_ENABLE_GTK']:
     CXXFLAGS += CONFIG['MOZ_CAIRO_CFLAGS']
-
-include('/ipc/chromium/chromium-config.mozbuild')
--- a/accessible/generic/DocAccessible.cpp
+++ b/accessible/generic/DocAccessible.cpp
@@ -1,17 +1,16 @@
 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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 "Accessible-inl.h"
 #include "AccIterator.h"
 #include "DocAccessible-inl.h"
-#include "DocAccessibleChild.h"
 #include "HTMLImageMapAccessible.h"
 #include "nsAccCache.h"
 #include "nsAccessiblePivot.h"
 #include "nsAccUtils.h"
 #include "nsEventShell.h"
 #include "nsTextEquivUtils.h"
 #include "Role.h"
 #include "RootAccessible.h"
@@ -79,17 +78,17 @@ DocAccessible::
   HyperTextAccessibleWrap(aRootContent, this), xpcAccessibleDocument(),
   // XXX aaronl should we use an algorithm for the initial cache size?
   mAccessibleCache(kDefaultCacheLength),
   mNodeToAccessibleMap(kDefaultCacheLength),
   mDocumentNode(aDocument),
   mScrollPositionChangedTicks(0),
   mLoadState(eTreeConstructionPending), mDocFlags(0), mLoadEventType(0),
   mVirtualCursor(nullptr),
-  mPresShell(aPresShell), mIPCDoc(nullptr)
+  mPresShell(aPresShell)
 {
   mGenericTypes |= eDocument;
   mStateFlags |= eNotNodeMapEntry;
 
   MOZ_ASSERT(mPresShell, "should have been given a pres shell");
   mPresShell->SetDocAccessible(this);
 
   // If this is a XUL Document, it should not implement nsHyperText
@@ -469,22 +468,16 @@ DocAccessible::Shutdown()
   // Walk the array backwards because child documents remove themselves from the
   // array as they are shutdown.
   int32_t childDocCount = mChildDocuments.Length();
   for (int32_t idx = childDocCount - 1; idx >= 0; idx--)
     mChildDocuments[idx]->Shutdown();
 
   mChildDocuments.Clear();
 
-  // XXX thinking about ordering?
-  if (XRE_GetProcessType() != GeckoProcessType_Default) {
-    DocAccessibleChild::Send__delete__(mIPCDoc);
-    MOZ_ASSERT(!mIPCDoc);
-  }
-
   if (mVirtualCursor) {
     mVirtualCursor->RemoveObserver(this);
     mVirtualCursor = nullptr;
   }
 
   mPresShell->SetDocAccessible(nullptr);
   mPresShell = nullptr;  // Avoid reentrancy
 
@@ -1438,23 +1431,16 @@ DocAccessible::DoInitialUpdate()
   // Fire reorder event after the document tree is constructed. Note, since
   // this reorder event is processed by parent document then events targeted to
   // this document may be fired prior to this reorder event. If this is
   // a problem then consider to keep event processing per tab document.
   if (!IsRoot()) {
     nsRefPtr<AccReorderEvent> reorderEvent = new AccReorderEvent(Parent());
     ParentDocument()->FireDelayedEvent(reorderEvent);
   }
-
-  uint32_t childCount = ChildCount();
-  for (uint32_t i = 0; i < childCount; i++) {
-    Accessible* child = GetChildAt(i);
-    nsRefPtr<AccShowEvent> event = new AccShowEvent(child, child->GetContent());
-  FireDelayedEvent(event);
-  }
 }
 
 void
 DocAccessible::ProcessLoad()
 {
   mLoadState |= eCompletelyLoaded;
 
 #ifdef A11Y_LOG
--- a/accessible/generic/DocAccessible.h
+++ b/accessible/generic/DocAccessible.h
@@ -28,17 +28,16 @@ class nsIScrollableView;
 
 const uint32_t kDefaultCacheLength = 128;
 
 namespace mozilla {
 namespace a11y {
 
 class DocManager;
 class NotificationController;
-class DocAccessibleChild;
 class RelatedAccIterator;
 template<class Class, class Arg>
 class TNotification;
 
 class DocAccessible : public HyperTextAccessibleWrap,
                       public xpcAccessibleDocument,
                       public nsIDocumentObserver,
                       public nsIObserver,
@@ -516,30 +515,16 @@ protected:
    * Rules: The root chrome document accessible is never an event target
    * (for example, Firefox UI window). If the sub document is loaded within its
    * parent document then the parent document is a target only (aka events
    * coalescence).
    */
   bool IsLoadEventTarget() const;
 
   /**
-   * If this document is in a content process return the object responsible for
-   * communicating with the main process for it.
-   */
-  DocAccessibleChild* IPCDoc() const { return mIPCDoc; }
-
-  /*
-   * Set the object responsible for communicating with the main process on
-   * behalf of this document.
-   */
-  void SetIPCDoc(DocAccessibleChild* aIPCDoc) { mIPCDoc = aIPCDoc; }
-
-  friend class DocAccessibleChild;
-
-  /**
    * Used to fire scrolling end event after page scroll.
    *
    * @param aTimer    [in] the timer object
    * @param aClosure  [in] the document accessible where scrolling happens
    */
   static void ScrollTimerCallback(nsITimer* aTimer, void* aClosure);
 
 protected:
@@ -652,19 +637,16 @@ protected:
    */
   nsRefPtr<NotificationController> mNotificationController;
   friend class EventQueue;
   friend class NotificationController;
 
 private:
 
   nsIPresShell* mPresShell;
-
-  // Exclusively owned by IPDL so don't manually delete it!
-  DocAccessibleChild* mIPCDoc;
 };
 
 inline DocAccessible*
 Accessible::AsDoc()
 {
   return IsDoc() ? static_cast<DocAccessible*>(this) : nullptr;
 }
 
--- a/accessible/generic/moz.build
+++ b/accessible/generic/moz.build
@@ -23,17 +23,16 @@ UNIFIED_SOURCES += [
     'RootAccessible.cpp',
     'TableCellAccessible.cpp',
     'TextLeafAccessible.cpp',
 ]
 
 LOCAL_INCLUDES += [
     '/accessible/base',
     '/accessible/html',
-    '/accessible/ipc',
     '/accessible/xpcom',
     '/accessible/xul',
     '/content/base/src',
     '/layout/generic',
     '/layout/xul',
 ]
 
 if CONFIG['MOZ_ENABLE_GTK']:
@@ -50,10 +49,8 @@ elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'co
         '/accessible/mac',
     ]
 else:
     LOCAL_INCLUDES += [
         '/accessible/other',
     ]
 
 FINAL_LIBRARY = 'xul'
-
-include('/ipc/chromium/chromium-config.mozbuild')
deleted file mode 100644
--- a/accessible/ipc/DocAccessibleChild.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/* -*- 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 "DocAccessibleChild.h"
-
-#include "Accessible-inl.h"
-
-namespace mozilla {
-namespace a11y {
-
-void
-SerializeTree(Accessible* aRoot, nsTArray<AccessibleData>& aTree)
-{
-  uint64_t id = reinterpret_cast<uint64_t>(aRoot->UniqueID());
-  uint32_t role = aRoot->Role();
-  uint32_t childCount = aRoot->ChildCount();
-
-  nsString name;
-  aRoot->Name(name);
-  aTree.AppendElement(AccessibleData(id, role, childCount, name));
-  for (uint32_t i = 0; i < childCount; i++)
-    SerializeTree(aRoot->GetChildAt(i), aTree);
-}
-
-void
-DocAccessibleChild::ShowEvent(AccShowEvent* aShowEvent)
-{
-  Accessible* parent = aShowEvent->Parent();
-  uint64_t parentID = parent->IsDoc() ? 0 : reinterpret_cast<uint64_t>(parent->UniqueID());
-  uint32_t idxInParent = aShowEvent->GetAccessible()->IndexInParent();
-  nsTArray<AccessibleData> shownTree;
-  ShowEventData data(parentID, idxInParent, shownTree);
-  SerializeTree(aShowEvent->GetAccessible(), data.NewTree());
-  SendShowEvent(data);
-}
-}
-}
deleted file mode 100644
--- a/accessible/ipc/DocAccessibleChild.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* -*- 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_DocAccessibleChild_h
-#define mozilla_a11y_DocAccessibleChild_h
-
-#include "mozilla/a11y/DocAccessible.h"
-#include "mozilla/a11y/PDocAccessibleChild.h"
-#include "nsISupportsImpl.h"
-
-namespace mozilla {
-namespace a11y {
-class AccShowEvent;
-
-  /*
-   * These objects handle content side communication for an accessible document,
-   * and their lifetime is the same as the document they represent.
-   */
-class DocAccessibleChild : public PDocAccessibleChild
-{
-public:
-  DocAccessibleChild(DocAccessible* aDoc) :
-    mDoc(aDoc)
-  { MOZ_COUNT_CTOR(DocAccessibleChild); }
-  ~DocAccessibleChild()
-  {
-    mDoc->SetIPCDoc(nullptr);
-    MOZ_COUNT_DTOR(DocAccessibleChild);
-  }
-
-  void ShowEvent(AccShowEvent* aShowEvent);
-
-private:
-  DocAccessible* mDoc;
-};
-
-}
-}
-
-#endif
deleted file mode 100644
--- a/accessible/ipc/DocAccessibleParent.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-/* -*- 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 "DocAccessibleParent.h"
-#include "nsAutoPtr.h"
-#include "mozilla/a11y/Platform.h"
-
-namespace mozilla {
-namespace a11y {
-
-bool
-DocAccessibleParent::RecvShowEvent(const ShowEventData& aData)
-{
-  if (aData.NewTree().IsEmpty()) {
-    NS_ERROR("no children being added");
-    return false;
-  }
-
-  ProxyAccessible* parent = nullptr;
-  if (aData.ID()) {
-    ProxyEntry* e = mAccessibles.GetEntry(aData.ID());
-    if (e)
-      parent = e->mProxy;
-  } else {
-    parent = this;
-  }
-
-  // XXX This should really never happen, but sometimes we fail to fire the
-  // required show events.
-  if (!parent) {
-    NS_ERROR("adding child to unknown accessible");
-    return false;
-  }
-
-  uint32_t newChildIdx = aData.Idx();
-  if (newChildIdx > parent->ChildrenCount()) {
-    NS_ERROR("invalid index to add child at");
-    return false;
-  }
-
-  uint32_t consumed = AddSubtree(parent, aData.NewTree(), 0, newChildIdx);
-  MOZ_ASSERT(consumed == aData.NewTree().Length());
-  for (uint32_t i = 0; i < consumed; i++) {
-    uint64_t id = aData.NewTree()[i].ID();
-    MOZ_ASSERT(mAccessibles.GetEntry(id));
-  }
-
-  return consumed;
-}
-
-uint32_t
-DocAccessibleParent::AddSubtree(ProxyAccessible* aParent,
-                                const nsTArray<a11y::AccessibleData>& aNewTree,
-                                uint32_t aIdx, uint32_t aIdxInParent)
-{
-  if (aNewTree.Length() <= aIdx) {
-    NS_ERROR("bad index in serialized tree!");
-    return 0;
-  }
-
-  const AccessibleData& newChild = aNewTree[aIdx];
-  if (newChild.Role() > roles::LAST_ROLE) {
-    NS_ERROR("invalid role");
-    return 0;
-  }
-
-  auto role = static_cast<a11y::role>(newChild.Role());
-  ProxyAccessible* newProxy =
-    new ProxyAccessible(newChild.ID(), aParent, this, role, newChild.Name());
-  aParent->AddChildAt(aIdxInParent, newProxy);
-  mAccessibles.PutEntry(newChild.ID())->mProxy = newProxy;
-  ProxyCreated(newProxy);
-
-  uint32_t accessibles = 1;
-  uint32_t kids = newChild.ChildrenCount();
-  for (uint32_t i = 0; i < kids; i++) {
-    uint32_t consumed = AddSubtree(newProxy, aNewTree, aIdx + accessibles, i);
-    if (!consumed)
-      return 0;
-
-    accessibles += consumed;
-  }
-
-  MOZ_ASSERT(newProxy->ChildrenCount() == kids);
-
-  return accessibles;
-}
-
-bool
-DocAccessibleParent::RecvHideEvent(const uint64_t& aRootID)
-{
-  ProxyEntry* rootEntry = mAccessibles.GetEntry(aRootID);
-  if (!rootEntry) {
-    NS_ERROR("invalid root being removed!");
-    return true;
-  }
-
-  ProxyAccessible* root = rootEntry->mProxy;
-  if (!root) {
-    NS_ERROR("invalid root being removed!");
-    return true;
-  }
-
-  root->Shutdown();
-
-  return true;
-}
-}
-}
deleted file mode 100644
--- a/accessible/ipc/DocAccessibleParent.h
+++ /dev/null
@@ -1,141 +0,0 @@
-/* -*- 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_DocAccessibleParent_h
-#define mozilla_a11y_DocAccessibleParent_h
-
-#include "nsAccessibilityService.h"
-#include "ProxyAccessible.h"
-#include "mozilla/a11y/PDocAccessibleParent.h"
-#include "nsClassHashtable.h"
-#include "nsHashKeys.h"
-#include "nsISupportsImpl.h"
-
-namespace mozilla {
-namespace a11y {
-
-/*
- * These objects live in the main process and comunicate with and represent
- * an accessible document in a content process.
- */
-class DocAccessibleParent : public ProxyAccessible,
-    public PDocAccessibleParent
-{
-public:
-  DocAccessibleParent() :
-    mParentDoc(nullptr)
-  { MOZ_COUNT_CTOR_INHERITED(DocAccessibleParent, ProxyAccessible); }
-  ~DocAccessibleParent()
-  {
-    MOZ_COUNT_DTOR_INHERITED(DocAccessibleParent, ProxyAccessible);
-    MOZ_ASSERT(mChildDocs.Length() == 0);
-    MOZ_ASSERT(!mParentDoc);
-  }
-
-  /*
-   * Called when a message from a document in a child process notifies the main
-   * process it is firing an event.
-   */
-  virtual bool RecvEvent(const uint32_t& aType) MOZ_OVERRIDE
-  {
-    return true;
-  }
-
-  virtual bool RecvShowEvent(const ShowEventData& aData) MOZ_OVERRIDE;
-  virtual bool RecvHideEvent(const uint64_t& aRootID) MOZ_OVERRIDE;
-
-  virtual void ActorDestroy(ActorDestroyReason aWhy) MOZ_OVERRIDE
-  {
-    MOZ_ASSERT(mChildDocs.IsEmpty(),
-               "why wheren't the child docs destroyed already?");
-    mParentDoc ? mParentDoc->RemoveChildDoc(this)
-      : GetAccService()->RemoteDocShutdown(this);
-  }
-
-  /*
-   * Return the main processes representation of the parent document (if any)
-   * of the document this object represents.
-   */
-  DocAccessibleParent* Parent() const { return mParentDoc; }
-
-  /*
-   * Called when a document in a content process notifies the main process of a
-   * new child document.
-   */
-  bool AddChildDoc(DocAccessibleParent* aChildDoc, uint64_t aParentID)
-  {
-    ProxyAccessible* outerDoc = mAccessibles.GetEntry(aParentID)->mProxy;
-    if (!outerDoc)
-      return false;
-
-    aChildDoc->mParent = outerDoc;
-    outerDoc->SetChildDoc(aChildDoc);
-    mChildDocs.AppendElement(aChildDoc);
-    aChildDoc->mParentDoc = this;
-    return true;
-  }
-
-  /*
-   * Called when the document in the content process this object represents
-   * notifies the main process a child document has been removed.
-   */
-  void RemoveChildDoc(DocAccessibleParent* aChildDoc)
-  {
-    aChildDoc->mParent->SetChildDoc(nullptr);
-    mChildDocs.RemoveElement(aChildDoc);
-    aChildDoc->mParentDoc = nullptr;
-    MOZ_ASSERT(aChildDoc->mChildDocs.Length() == 0);
-  }
-
-  void RemoveAccessible(ProxyAccessible* aAccessible)
-  {
-    MOZ_ASSERT(mAccessibles.GetEntry(aAccessible->ID()));
-    mAccessibles.RemoveEntry(aAccessible->ID());
-  }
-
-private:
-
-  class ProxyEntry : public PLDHashEntryHdr
-  {
-  public:
-    ProxyEntry(const void*) : mProxy(nullptr) {}
-    ProxyEntry(ProxyEntry&& aOther) :
-      mProxy(aOther.mProxy) { aOther.mProxy = nullptr; }
-    ~ProxyEntry() { delete mProxy; }
-
-    typedef uint64_t KeyType;
-    typedef const void* KeyTypePointer;
-
-    bool KeyEquals(const void* aKey) const
-    { return mProxy->ID() == (uint64_t)aKey; }
-
-    static const void* KeyToPointer(uint64_t aKey) { return (void*)aKey; }
-
-    static PLDHashNumber HashKey(const void* aKey) { return (uint64_t)aKey; }
-
-    enum { ALLOW_MEMMOVE = true };
-
-    ProxyAccessible* mProxy;
-  };
-
-  uint32_t AddSubtree(ProxyAccessible* aParent,
-                      const nsTArray<AccessibleData>& aNewTree, uint32_t aIdx,
-                      uint32_t aIdxInParent);
-
-  nsTArray<DocAccessibleParent*> mChildDocs;
-  DocAccessibleParent* mParentDoc;
-
-  /*
-   * Conceptually this is a map from IDs to proxies, but we store the ID in the
-   * proxy object so we can't use a real map.
-   */
-  nsTHashtable<ProxyEntry> mAccessibles;
-};
-
-}
-}
-
-#endif
deleted file mode 100644
--- a/accessible/ipc/PDocAccessible.ipdl
+++ /dev/null
@@ -1,44 +0,0 @@
-/* -*- 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 protocol PContent;
-
-namespace mozilla {
-namespace a11y {
-
-struct AccessibleData
-{
-  uint64_t ID;
-  uint32_t Role;
-  uint32_t ChildrenCount;
-  nsString Name;
-};
-
-struct ShowEventData
-{
-  uint64_t ID;
-  uint32_t Idx;
-  AccessibleData[] NewTree;
-};
-
-protocol PDocAccessible
-{
-  manager PContent;
-
-parent:
-  __delete__();
-
-  /*
-   * Notify the parent process the document in the child process is firing an
-   * event.
-   */
-  Event(uint32_t type);
-  ShowEvent(ShowEventData data);
-  HideEvent(uint64_t aRootID);
-};
-
-}
-}
deleted file mode 100644
--- a/accessible/ipc/ProxyAccessible.cpp
+++ /dev/null
@@ -1,42 +0,0 @@
-/* -*- 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/Platform.h"
-
-namespace mozilla {
-namespace a11y {
-
-void
-ProxyAccessible::Shutdown()
-{
-  MOZ_ASSERT(!mOuterDoc);
-
-  uint32_t childCount = mChildren.Length();
-  for (uint32_t idx = 0; idx < childCount; idx++)
-    mChildren[idx]->Shutdown();
-
-  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;
-  }
-}
-}
-}
deleted file mode 100644
--- a/accessible/ipc/ProxyAccessible.h
+++ /dev/null
@@ -1,77 +0,0 @@
-/* -*- 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
-
-#include "mozilla/a11y/Role.h"
-#include "nsString.h"
-#include "nsTArray.h"
-
-namespace mozilla {
-namespace a11y {
-
-class DocAccessibleParent;
-
-class ProxyAccessible
-{
-public:
-
-  ProxyAccessible(uint64_t aID, ProxyAccessible* aParent,
-                  DocAccessibleParent* aDoc, role aRole,
-                  const nsString& aName) :
-     mParent(aParent), mDoc(aDoc), mID(aID), mRole(aRole), mOuterDoc(false), mName(aName)
-  {
-    MOZ_COUNT_CTOR(ProxyAccessible);
-  }
-  ~ProxyAccessible() { MOZ_COUNT_DTOR(ProxyAccessible); }
-
-  void AddChildAt(uint32_t aIdx, ProxyAccessible* aChild)
-  { mChildren.InsertElementAt(aIdx, aChild); }
-
-  uint32_t ChildrenCount() const { return mChildren.Length(); }
-
-  void Shutdown();
-
-  void SetChildDoc(DocAccessibleParent*);
-
-  /**
-   * Get the role of the accessible we're proxying.
-   */
-  role Role() const { return mRole; }
-
-  /**
-   * 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; }
-
-protected:
-  ProxyAccessible() :
-    mParent(nullptr), mDoc(nullptr) { MOZ_COUNT_CTOR(ProxyAccessible); }
-
-protected:
-  ProxyAccessible* mParent;
-
-private:
-  nsTArray<ProxyAccessible*> mChildren;
-  DocAccessibleParent* mDoc;
-  uintptr_t mWrapper;
-  uint64_t mID;
-  role mRole : 31;
-  bool mOuterDoc : 1;
-  nsString mName;
-};
-
-}
-}
-
-#endif
deleted file mode 100644
--- a/accessible/ipc/moz.build
+++ /dev/null
@@ -1,28 +0,0 @@
-# -*- Mode: python; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40 -*-
-# vim: set filetype=python:
-# 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/.
-
-IPDL_SOURCES += ['PDocAccessible.ipdl']
-
-EXPORTS.mozilla.a11y += [
-    'DocAccessibleChild.h',
-    'DocAccessibleParent.h',
-    'ProxyAccessible.h'
-]
-
-SOURCES += [
-    'DocAccessibleChild.cpp',
-    'DocAccessibleParent.cpp',
-    'ProxyAccessible.cpp'
-]
-
-LOCAL_INCLUDES += [
-    '../base',
-    '../generic',
-    ]
-
-FINAL_LIBRARY = 'xul'
-
-include('/ipc/chromium/chromium-config.mozbuild')
--- a/accessible/mac/Platform.mm
+++ b/accessible/mac/Platform.mm
@@ -28,25 +28,16 @@ PlatformInit()
 {
 }
 
 void
 PlatformShutdown()
 {
 }
 
-void
-ProxyCreated(ProxyAccessible*)
-{
-}
-
-void
-ProxyDestroyed(ProxyAccessible*)
-{
-}
 }
 }
 
 @interface GeckoNSApplication(a11y)
 -(void)accessibilitySetValue:(id)value forAttribute:(NSString*)attribute;
 @end
 
 @implementation GeckoNSApplication(a11y)
--- a/accessible/moz.build
+++ b/accessible/moz.build
@@ -10,14 +10,14 @@ if CONFIG['MOZ_ENABLE_GTK']:
     DIRS += ['atk']
 elif toolkit == 'windows':
     DIRS += ['windows']
 elif toolkit == 'cocoa':
     DIRS += ['mac']
 else:
     DIRS += ['other']
 
-DIRS += ['base', 'generic', 'html', 'interfaces', 'ipc', 'jsat', 'xpcom']
+DIRS += ['base', 'generic', 'html', 'interfaces', 'jsat', 'xpcom']
 
 if CONFIG['MOZ_XUL']:
     DIRS += ['xul']
 
 TEST_DIRS += ['tests/mochitest']
--- a/accessible/other/Platform.cpp
+++ b/accessible/other/Platform.cpp
@@ -13,18 +13,8 @@ void
 a11y::PlatformInit()
 {
 }
 
 void
 a11y::PlatformShutdown()
 {
 }
-
-void
-a11y::ProxyCreated(ProxyAccessible*)
-{
-}
-
-void
-a11y::ProxyDestroyed(ProxyAccessible*)
-{
-}
--- a/accessible/windows/msaa/Platform.cpp
+++ b/accessible/windows/msaa/Platform.cpp
@@ -29,17 +29,8 @@ a11y::PlatformInit()
 void
 a11y::PlatformShutdown()
 {
   ::DestroyCaret();
 
   nsWinUtils::ShutdownWindowEmulation();
 }
 
-void
-a11y::ProxyCreated(ProxyAccessible*)
-{
-}
-
-void
-a11y::ProxyDestroyed(ProxyAccessible*)
-{
-}
--- a/dom/ipc/ContentChild.cpp
+++ b/dom/ipc/ContentChild.cpp
@@ -14,17 +14,16 @@
 
 #include "ContentChild.h"
 
 #include "BlobChild.h"
 #include "CrashReporterChild.h"
 #include "TabChild.h"
 
 #include "mozilla/Attributes.h"
-#include "mozilla/a11y/DocAccessibleChild.h"
 #include "mozilla/Preferences.h"
 #include "mozilla/dom/ContentBridgeChild.h"
 #include "mozilla/dom/ContentBridgeParent.h"
 #include "mozilla/dom/DOMStorageIPC.h"
 #include "mozilla/dom/ExternalHelperAppChild.h"
 #include "mozilla/dom/PCrashReporterChild.h"
 #include "mozilla/dom/Promise.h"
 #include "mozilla/dom/asmjscache/AsmJSCache.h"
@@ -703,30 +702,16 @@ ContentChild::InitXPCOM()
     // This object is held alive by the observer service.
     nsRefPtr<SystemMessageHandledObserver> sysMsgObserver =
         new SystemMessageHandledObserver();
     sysMsgObserver->Init();
 
     InitOnContentProcessCreated();
 }
 
-a11y::PDocAccessibleChild*
-ContentChild::AllocPDocAccessibleChild(PDocAccessibleChild*, const uint64_t&)
-{
-  MOZ_ASSERT(false, "should never call this!");
-  return nullptr;
-}
-
-bool
-ContentChild::DeallocPDocAccessibleChild(a11y::PDocAccessibleChild* aChild)
-{
-  delete static_cast<mozilla::a11y::DocAccessibleChild*>(aChild);
-  return true;
-}
-
 PMemoryReportRequestChild*
 ContentChild::AllocPMemoryReportRequestChild(const uint32_t& aGeneration,
                                              const bool &aAnonymize,
                                              const bool &aMinimizeMemoryUsage,
                                              const MaybeFileDesc& aDMDFile)
 {
     MemoryReportRequestChild *actor =
         new MemoryReportRequestChild(aGeneration, aAnonymize, aDMDFile);
--- a/dom/ipc/ContentChild.h
+++ b/dom/ipc/ContentChild.h
@@ -375,18 +375,16 @@ public:
                                          const bool& aIsForBrowser) MOZ_OVERRIDE;
 
     virtual bool RecvPBrowserConstructor(PBrowserChild* aCctor,
                                          const IPCTabContext& aContext,
                                          const uint32_t& aChromeFlags,
                                          const uint64_t& aID,
                                          const bool& aIsForApp,
                                          const bool& aIsForBrowser) MOZ_OVERRIDE;
-    virtual PDocAccessibleChild* AllocPDocAccessibleChild(PDocAccessibleChild*, const uint64_t&) MOZ_OVERRIDE;
-    virtual bool DeallocPDocAccessibleChild(PDocAccessibleChild*) MOZ_OVERRIDE;
 
 private:
     virtual void ActorDestroy(ActorDestroyReason why) MOZ_OVERRIDE;
 
     virtual void ProcessingError(Result what) MOZ_OVERRIDE;
 
     /**
      * Exit *now*.  Do not shut down XPCOM, do not pass Go, do not run
--- a/dom/ipc/ContentParent.cpp
+++ b/dom/ipc/ContentParent.cpp
@@ -25,18 +25,16 @@
 #include <set>
 
 #include "AppProcessChecker.h"
 #include "AudioChannelService.h"
 #include "BlobParent.h"
 #include "CrashReporterParent.h"
 #include "IHistory.h"
 #include "mozIApplication.h"
-#include "mozilla/a11y/DocAccessibleParent.h"
-#include "nsAccessibilityService.h"
 #include "mozilla/ClearOnShutdown.h"
 #include "mozilla/dom/DataStoreService.h"
 #include "mozilla/dom/DOMStorageIPC.h"
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/ExternalHelperAppParent.h"
 #include "mozilla/dom/FileSystemRequestParent.h"
 #include "mozilla/dom/GeolocationBinding.h"
 #include "mozilla/dom/PContentBridgeParent.h"
@@ -2694,44 +2692,16 @@ ContentParent::Observe(nsISupports* aSub
     }
 #endif
     else if (!strcmp(aTopic, "app-theme-changed")) {
         unused << SendOnAppThemeChanged();
     }
     return NS_OK;
 }
 
-  a11y::PDocAccessibleParent*
-ContentParent::AllocPDocAccessibleParent(PDocAccessibleParent* aParent, const uint64_t&)
-{
-  return new a11y::DocAccessibleParent();
-}
-
-bool
-ContentParent::DeallocPDocAccessibleParent(PDocAccessibleParent* aParent)
-{
-  delete static_cast<a11y::DocAccessibleParent*>(aParent);
-  return true;
-}
-
-bool
-ContentParent::RecvPDocAccessibleConstructor(PDocAccessibleParent* aDoc, PDocAccessibleParent* aParentDoc, const uint64_t& aParentID)
-{
-  auto doc = static_cast<a11y::DocAccessibleParent*>(aDoc);
-  if (aParentDoc) {
-    MOZ_ASSERT(aParentID);
-    auto parentDoc = static_cast<a11y::DocAccessibleParent*>(aParentDoc);
-    return parentDoc->AddChildDoc(doc, aParentID);
-  } else {
-    MOZ_ASSERT(!aParentID);
-    GetAccService()->RemoteDocAdded(doc);
-  }
-  return true;
-}
-
 PCompositorParent*
 ContentParent::AllocPCompositorParent(mozilla::ipc::Transport* aTransport,
                                       base::ProcessId aOtherProcess)
 {
     return CompositorParent::Create(aTransport, aOtherProcess);
 }
 
 PImageBridgeParent*
--- a/dom/ipc/ContentParent.h
+++ b/dom/ipc/ContentParent.h
@@ -661,21 +661,16 @@ private:
                           const nsCString& aOrigin,
                           const nsString& aDatabaseName,
                           const int64_t& aFileId,
                           int32_t* aRefCnt,
                           int32_t* aDBRefCnt,
                           int32_t* aSliceRefCnt,
                           bool* aResult) MOZ_OVERRIDE;
 
-    virtual PDocAccessibleParent* AllocPDocAccessibleParent(PDocAccessibleParent*, const uint64_t&) MOZ_OVERRIDE;
-    virtual bool DeallocPDocAccessibleParent(PDocAccessibleParent*) MOZ_OVERRIDE;
-    virtual bool RecvPDocAccessibleConstructor(PDocAccessibleParent* aDoc,
-                                               PDocAccessibleParent* aParentDoc, const uint64_t& aParentID) MOZ_OVERRIDE;
-
     // If you add strong pointers to cycle collected objects here, be sure to
     // release these objects in ShutDownProcess.  See the comment there for more
     // details.
 
     GeckoChildProcessHost* mSubprocess;
     ContentParent* mOpener;
 
     uint64_t mChildID;
--- a/dom/ipc/PContent.ipdl
+++ b/dom/ipc/PContent.ipdl
@@ -9,17 +9,16 @@ include protocol PBackground;
 include protocol PBlob;
 include protocol PBluetooth;
 include protocol PBrowser;
 include protocol PCellBroadcast;
 include protocol PCompositor;
 include protocol PContentBridge;
 include protocol PCycleCollectWithLogs;
 include protocol PCrashReporter;
-include protocol PDocAccessible;
 include protocol PExternalHelperApp;
 include protocol PDeviceStorageRequest;
 include protocol PFileDescriptorSet;
 include protocol PFMRadio;
 include protocol PFileSystemRequest;
 include protocol PHal;
 include protocol PImageBridge;
 include protocol PMemoryReportRequest;
@@ -328,17 +327,16 @@ intr protocol PContent
 
     manages PAsmJSCacheEntry;
     manages PBlob;
     manages PBluetooth;
     manages PBrowser;
     manages PCellBroadcast;
     manages PCrashReporter;
     manages PCycleCollectWithLogs;
-    manages PDocAccessible;
     manages PDeviceStorageRequest;
     manages PFileSystemRequest;
     manages PExternalHelperApp;
     manages PFileDescriptorSet;
     manages PFMRadio;
     manages PHal;
     manages PMemoryReportRequest;
     manages PMobileConnection;
@@ -486,24 +484,16 @@ child:
 
     /**
      * Notify windows in the child to apply a new app style.
      */
     OnAppThemeChanged();
 
 parent:
     /**
-     * Tell the parent process a new accessible document has been created.
-     * aParentDoc is the accessible document it was created in if any, and
-     * aParentAcc is the id of the accessible in that document the new document
-     * is a child of.
-     */
-    PDocAccessible(nullable PDocAccessible aParentDoc, uint64_t aParentAcc);
-
-    /**
      * Tell the content process some attributes of itself.  This is
      * among the first information queried by content processes after
      * startup.  (The message is sync to allow the content process to
      * control when it receives the information.)
      *
      * |id| is a unique ID among all subprocesses.  When |isForApp &&
      * isForBrowser|, we're loading <browser> for an app.  When
      * |isForBrowser|, we're loading <browser>.  When |!isForApp &&