--- a/b2g/installer/package-manifest.in
+++ b/b2g/installer/package-manifest.in
@@ -207,17 +207,16 @@
 @BINPATH@/components/dom_storage.xpt
 @BINPATH@/components/dom_stylesheets.xpt
 @BINPATH@/components/dom_threads.xpt
 @BINPATH@/components/dom_traversal.xpt
 @BINPATH@/components/dom_views.xpt
 @BINPATH@/components/dom_xbl.xpt
 @BINPATH@/components/dom_xpath.xpt
 @BINPATH@/components/dom_xul.xpt
-@BINPATH@/components/dom_loadsave.xpt
 @BINPATH@/components/dom_time.xpt
 @BINPATH@/components/downloads.xpt
 @BINPATH@/components/editor.xpt
 @BINPATH@/components/embed_base.xpt
 @BINPATH@/components/extensions.xpt
 @BINPATH@/components/exthandler.xpt
 @BINPATH@/components/exthelper.xpt
 @BINPATH@/components/fastfind.xpt

--- a/browser/installer/package-manifest.in
+++ b/browser/installer/package-manifest.in
@@ -206,17 +206,16 @@
 @BINPATH@/components/dom_mobilemessage.xpt
 @BINPATH@/components/dom_sms.xpt
 @BINPATH@/components/dom_storage.xpt
 @BINPATH@/components/dom_stylesheets.xpt
 @BINPATH@/components/dom_traversal.xpt
 @BINPATH@/components/dom_xbl.xpt
 @BINPATH@/components/dom_xpath.xpt
 @BINPATH@/components/dom_xul.xpt
-@BINPATH@/components/dom_loadsave.xpt
 @BINPATH@/components/downloads.xpt
 @BINPATH@/components/editor.xpt
 @BINPATH@/components/embed_base.xpt
 @BINPATH@/components/extensions.xpt
 @BINPATH@/components/exthandler.xpt
 @BINPATH@/components/exthelper.xpt
 @BINPATH@/components/fastfind.xpt
 @BINPATH@/components/feeds.xpt

--- a/content/base/public/nsDeprecatedOperationList.h
+++ b/content/base/public/nsDeprecatedOperationList.h
@@ -14,18 +14,16 @@ DEPRECATED_OPERATION(SetAttributeNodeNS)
 DEPRECATED_OPERATION(RemoveAttributeNode)
 DEPRECATED_OPERATION(CreateAttribute)
 DEPRECATED_OPERATION(CreateAttributeNS)
 DEPRECATED_OPERATION(Specified)
 DEPRECATED_OPERATION(OwnerElement)
 DEPRECATED_OPERATION(NodeValue)
 DEPRECATED_OPERATION(TextContent)
 DEPRECATED_OPERATION(EnablePrivilege)
-DEPRECATED_OPERATION(Position)
-DEPRECATED_OPERATION(TotalSize)
 DEPRECATED_OPERATION(InputEncoding)
 DEPRECATED_OPERATION(MozBeforePaint)
 DEPRECATED_OPERATION(DOMExceptionCode)
 DEPRECATED_OPERATION(NoExposedProps)
 DEPRECATED_OPERATION(MutationEvent)
 DEPRECATED_OPERATION(MozSlice)
 DEPRECATED_OPERATION(Components)
 DEPRECATED_OPERATION(PrefixedVisibilityAPI)

--- a/content/base/src/nsXMLHttpRequest.cpp
+++ b/content/base/src/nsXMLHttpRequest.cpp
@@ -382,17 +382,16 @@ NS_IMPL_RELEASE_INHERITED(nsXMLHttpReque
 /////////////////////////////////////////////
 
 nsXMLHttpRequest::nsXMLHttpRequest()
   : mResponseBodyDecodedPos(0),
     mResponseType(XML_HTTP_RESPONSE_TYPE_DEFAULT),
     mRequestObserver(nullptr), mState(XML_HTTP_REQUEST_UNSENT),
     mUploadTransferred(0), mUploadTotal(0), mUploadComplete(true),
     mProgressSinceLastProgressEvent(false),
-    mUploadProgress(0), mUploadProgressMax(0),
     mRequestSentTime(0), mTimeoutMilliseconds(0),
     mErrorLoad(false), mWaitingForOnStopRequest(false),
     mProgressTimerIsActive(false), mProgressEventWasDelayed(false),
     mIsHtml(false),
     mWarnAboutMultipartHtml(false),
     mWarnAboutSyncHtml(false),
     mLoadLengthComputable(false), mLoadTotal(0),
     mIsSystem(false),
@@ -1539,33 +1538,31 @@ nsXMLHttpRequest::CreateReadystatechange
   (*aDOMEvent)->SetTrusted(true);
 
   return NS_OK;
 }
 
 void
 nsXMLHttpRequest::DispatchProgressEvent(nsDOMEventTargetHelper* aTarget,
                                         const nsAString& aType,
-                                        bool aUseLSEventWrapper,
                                         bool aLengthComputable,
-                                        uint64_t aLoaded, uint64_t aTotal,
-                                        uint64_t aPosition, uint64_t aTotalSize)
+                                        uint64_t aLoaded, uint64_t aTotal)
 {
   NS_ASSERTION(aTarget, "null target");
   NS_ASSERTION(!aType.IsEmpty(), "missing event type");
 
   if (NS_FAILED(CheckInnerWindowCorrectness()) ||
       (!AllowUploadProgress() && aTarget == mUpload)) {
     return;
   }
 
   bool dispatchLoadend = aType.EqualsLiteral(LOAD_STR) ||
-                           aType.EqualsLiteral(ERROR_STR) ||
-                           aType.EqualsLiteral(TIMEOUT_STR) ||
-                           aType.EqualsLiteral(ABORT_STR);
+                         aType.EqualsLiteral(ERROR_STR) ||
+                         aType.EqualsLiteral(TIMEOUT_STR) ||
+                         aType.EqualsLiteral(ABORT_STR);
 
   nsCOMPtr<nsIDOMEvent> event;
   nsresult rv = NS_NewDOMProgressEvent(getter_AddRefs(event),
                                        nullptr, nullptr);
   if (NS_FAILED(rv)) {
     return;
   }
 
@@ -1574,27 +1571,21 @@ nsXMLHttpRequest::DispatchProgressEvent(
     return;
   }
 
   progress->InitProgressEvent(aType, false, false, aLengthComputable,
                               aLoaded, (aTotal == UINT64_MAX) ? 0 : aTotal);
 
   event->SetTrusted(true);
 
-  if (aUseLSEventWrapper) {
-    nsCOMPtr<nsIDOMProgressEvent> xhrprogressEvent =
-      new nsXMLHttpProgressEvent(progress, aPosition, aTotalSize, GetOwner());
-    event = xhrprogressEvent;
-  }
   aTarget->DispatchDOMEvent(nullptr, event, nullptr, nullptr);
-  
+
   if (dispatchLoadend) {
     DispatchProgressEvent(aTarget, NS_LITERAL_STRING(LOADEND_STR),
-                          aUseLSEventWrapper, aLengthComputable,
-                          aLoaded, aTotal, aPosition, aTotalSize);
+                          aLengthComputable, aLoaded, aTotal);
   }
 }
                                           
 already_AddRefed<nsIHttpChannel>
 nsXMLHttpRequest::GetCurrentHttpChannel()
 {
   nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(mReadRequest);
   if (!httpChannel) {
@@ -2804,18 +2795,16 @@ nsXMLHttpRequest::Send(nsIVariant* aVari
 
   mUploadTransferred = 0;
   mUploadTotal = 0;
   // By default we don't have any upload, so mark upload complete.
   mUploadComplete = true;
   mErrorLoad = false;
   mLoadLengthComputable = false;
   mLoadTotal = 0;
-  mUploadProgress = 0;
-  mUploadProgressMax = 0;
   if ((aVariant || !aBody.IsNull()) && httpChannel &&
       !method.EqualsLiteral("GET")) {
 
     nsAutoCString charset;
     nsAutoCString defaultContentType;
     nsCOMPtr<nsIInputStream> postDataStream;
 
     rv = GetRequestBody(aVariant, aBody, getter_AddRefs(postDataStream),
@@ -3642,32 +3631,30 @@ nsXMLHttpRequest::MaybeDispatchProgressE
     StartProgressEventTimer();
   }
 
   // We're uploading if our state is XML_HTTP_REQUEST_OPENED or
   // XML_HTTP_REQUEST_SENT
   if ((XML_HTTP_REQUEST_OPENED | XML_HTTP_REQUEST_SENT) & mState) {
     if (aFinalProgress) {
       mUploadTotal = mUploadTransferred;
-      mUploadProgressMax = mUploadProgress;
     }
     if (mUpload && !mUploadComplete) {
       DispatchProgressEvent(mUpload, NS_LITERAL_STRING(PROGRESS_STR),
-                            true, mUploadLengthComputable, mUploadTransferred,
-                            mUploadTotal, mUploadProgress,
-                            mUploadProgressMax);
+                            mUploadLengthComputable, mUploadTransferred,
+                            mUploadTotal);
     }
   } else {
     if (aFinalProgress) {
       mLoadTotal = mLoadTransferred;
     }
     mInLoadProgressEvent = true;
     DispatchProgressEvent(this, NS_LITERAL_STRING(PROGRESS_STR),
-                          true, mLoadLengthComputable, mLoadTransferred,
-                          mLoadTotal, mLoadTransferred, mLoadTotal);
+                          mLoadLengthComputable, mLoadTransferred,
+                          mLoadTotal);
     mInLoadProgressEvent = false;
     if (mResponseType == XML_HTTP_RESPONSE_TYPE_CHUNKED_TEXT ||
         mResponseType == XML_HTTP_RESPONSE_TYPE_CHUNKED_ARRAYBUFFER) {
       mResponseBody.Truncate();
       mResponseText.Truncate();
       mResultArrayBuffer = nullptr;
     }
   }
@@ -3696,18 +3683,16 @@ nsXMLHttpRequest::OnProgress(nsIRequest 
     uint64_t total = aProgressMax;
     if (lengthComputable) {
       uint64_t headerSize = aProgressMax - mUploadTotal;
       loaded -= headerSize;
       total -= headerSize;
     }
     mUploadLengthComputable = lengthComputable;
     mUploadTransferred = loaded;
-    mUploadProgress = aProgress;
-    mUploadProgressMax = aProgressMax;
     mProgressSinceLastProgressEvent = true;
 
     MaybeDispatchProgressEvents(false);
   } else {
     mLoadLengthComputable = lengthComputable;
     mLoadTotal = lengthComputable ? aProgressMax : 0;
     
     // Don't dispatch progress events here. OnDataAvailable will take care
@@ -4004,91 +3989,16 @@ nsHeaderVisitor::VisitHeader(const nsACS
     mHeaders.Append(header);
     mHeaders.Append(": ");
     mHeaders.Append(value);
     mHeaders.Append("\r\n");
   }
   return NS_OK;
 }
 
-// DOM event class to handle progress notifications
-nsXMLHttpProgressEvent::nsXMLHttpProgressEvent(nsIDOMProgressEvent* aInner,
-                                               uint64_t aCurrentProgress,
-                                               uint64_t aMaxProgress,
-                                               nsPIDOMWindow* aWindow)
-  : mWindow(aWindow)
-{
-  mInner = aInner;
-  mCurProgress = aCurrentProgress;
-  mMaxProgress = aMaxProgress;
-}
-
-nsXMLHttpProgressEvent::~nsXMLHttpProgressEvent()
-{}
-
-DOMCI_DATA(XMLHttpProgressEvent, nsXMLHttpProgressEvent)
-
-// QueryInterface implementation for nsXMLHttpProgressEvent
-NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXMLHttpProgressEvent)
-  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMProgressEvent)
-  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsIDOMEvent, nsIDOMProgressEvent)
-  NS_INTERFACE_MAP_ENTRY(nsIDOMProgressEvent)
-  NS_INTERFACE_MAP_ENTRY(nsIDOMLSProgressEvent)
-  NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(XMLHttpProgressEvent)
-NS_INTERFACE_MAP_END
-
-NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXMLHttpProgressEvent)
-NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXMLHttpProgressEvent)
-
-NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsXMLHttpProgressEvent)
-  NS_IMPL_CYCLE_COLLECTION_UNLINK(mInner);
-  NS_IMPL_CYCLE_COLLECTION_UNLINK(mWindow);
-NS_IMPL_CYCLE_COLLECTION_UNLINK_END
-
-NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXMLHttpProgressEvent)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mInner)
-  NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow);
-NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
-
-NS_IMETHODIMP nsXMLHttpProgressEvent::GetInput(nsIDOMLSInput * *aInput)
-{
-  *aInput = nullptr;
-  return NS_ERROR_NOT_IMPLEMENTED;
-}
-
-void
-nsXMLHttpProgressEvent::WarnAboutLSProgressEvent(nsIDocument::DeprecatedOperations aOperation)
-{
-  if (!mWindow) {
-    return;
-  }
-  nsCOMPtr<nsIDocument> document =
-    do_QueryInterface(mWindow->GetExtantDocument());
-  if (!document) {
-    return;
-  }
-  document->WarnOnceAbout(aOperation);
-}
-
-NS_IMETHODIMP nsXMLHttpProgressEvent::GetPosition(uint32_t *aPosition)
-{
-  WarnAboutLSProgressEvent(nsIDocument::ePosition);
-  // XXX can we change the iface?
-  *aPosition = uint32_t(mCurProgress);
-  return NS_OK;
-}
-
-NS_IMETHODIMP nsXMLHttpProgressEvent::GetTotalSize(uint32_t *aTotalSize)
-{
-  WarnAboutLSProgressEvent(nsIDocument::eTotalSize);
-  // XXX can we change the iface?
-  *aTotalSize = uint32_t(mMaxProgress);
-  return NS_OK;
-}
-
 // nsXMLHttpRequestXPCOMifier implementation
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXMLHttpRequestXPCOMifier)
   NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
   NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
   NS_INTERFACE_MAP_ENTRY(nsIChannelEventSink)
   NS_INTERFACE_MAP_ENTRY(nsIProgressEventSink)
   NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
   NS_INTERFACE_MAP_ENTRY(nsITimerCallback)

--- a/content/base/src/nsXMLHttpRequest.h
+++ b/content/base/src/nsXMLHttpRequest.h
@@ -21,17 +21,16 @@
 #include "nsIChannelEventSink.h"
 #include "nsIAsyncVerifyRedirectCallback.h"
 #include "nsIInterfaceRequestor.h"
 #include "nsIHttpHeaderVisitor.h"
 #include "nsIProgressEventSink.h"
 #include "nsCOMArray.h"
 #include "nsJSUtils.h"
 #include "nsTArray.h"
-#include "nsIDOMLSProgressEvent.h"
 #include "nsITimer.h"
 #include "nsIDOMProgressEvent.h"
 #include "nsDOMEventTargetHelper.h"
 #include "nsDOMFile.h"
 #include "nsDOMBlobBuilder.h"
 #include "nsIPrincipal.h"
 #include "nsIScriptObjectPrincipal.h"
 #include "nsISizeOfEventTarget.h"
@@ -445,39 +444,20 @@ public:
   }
 
   // We need a GetInterface callable from JS for chrome JS
   JS::Value GetInterface(JSContext* aCx, nsIJSID* aIID, ErrorResult& aRv);
 
   // This creates a trusted readystatechange event, which is not cancelable and
   // doesn't bubble.
   static nsresult CreateReadystatechangeEvent(nsIDOMEvent** aDOMEvent);
-  // For backwards compatibility aPosition should contain the headers for upload
-  // and aTotalSize is UINT64_MAX when unknown. Both those values are
-  // used by nsXMLHttpProgressEvent. Normal progress event should not use
-  // headers in aLoaded and aTotal is 0 when unknown.
-  void DispatchProgressEvent(nsDOMEventTargetHelper* aTarget,
-                             const nsAString& aType,
-                             // Whether to use nsXMLHttpProgressEvent,
-                             // which implements LS Progress Event.
-                             bool aUseLSEventWrapper,
-                             bool aLengthComputable,
-                             // For Progress Events
-                             uint64_t aLoaded, uint64_t aTotal,
-                             // For LS Progress Events
-                             uint64_t aPosition, uint64_t aTotalSize);
   void DispatchProgressEvent(nsDOMEventTargetHelper* aTarget,
                              const nsAString& aType,
                              bool aLengthComputable,
-                             uint64_t aLoaded, uint64_t aTotal)
-  {
-    DispatchProgressEvent(aTarget, aType, false,
-                          aLengthComputable, aLoaded, aTotal,
-                          aLoaded, aLengthComputable ? aTotal : UINT64_MAX);
-  }
+                             uint64_t aLoaded, uint64_t aTotal);
 
   // Dispatch the "progress" event on the XHR or XHR.upload object if we've
   // received data since the last "progress" event. Also dispatches
   // "uploadprogress" as needed.
   void MaybeDispatchProgressEvents(bool aFinalProgress);
 
   // This is called by the factory constructor.
   nsresult Init();
@@ -636,18 +616,16 @@ protected:
   uint32_t mState;
 
   nsRefPtr<nsXMLHttpRequestUpload> mUpload;
   uint64_t mUploadTransferred;
   uint64_t mUploadTotal;
   bool mUploadLengthComputable;
   bool mUploadComplete;
   bool mProgressSinceLastProgressEvent;
-  uint64_t mUploadProgress; // For legacy
-  uint64_t mUploadProgressMax; // For legacy
 
   // Timeout support
   PRTime mRequestSentTime;
   uint32_t mTimeoutMilliseconds;
   nsCOMPtr<nsITimer> mTimeoutTimer;
   void StartTimeoutTimer();
   void HandleTimeoutCallback();
 
@@ -732,43 +710,16 @@ class nsXMLHttpRequestXPCOMifier MOZ_FIN
   NS_FORWARD_NSITIMERCALLBACK(mXHR->)
 
   NS_DECL_NSIINTERFACEREQUESTOR
 
 private:
   nsRefPtr<nsXMLHttpRequest> mXHR;
 };
 
-// helper class to expose a progress DOM Event
-
-class nsXMLHttpProgressEvent : public nsIDOMProgressEvent,
-                               public nsIDOMLSProgressEvent
-{
-public:
-  nsXMLHttpProgressEvent(nsIDOMProgressEvent* aInner,
-                         uint64_t aCurrentProgress,
-                         uint64_t aMaxProgress,
-                         nsPIDOMWindow* aWindow);
-  virtual ~nsXMLHttpProgressEvent();
-
-  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
-  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsXMLHttpProgressEvent, nsIDOMProgressEvent)
-  NS_FORWARD_NSIDOMEVENT(mInner->)
-  NS_FORWARD_NSIDOMPROGRESSEVENT(mInner->)
-  NS_DECL_NSIDOMLSPROGRESSEVENT
-
-protected:
-  void WarnAboutLSProgressEvent(nsIDocument::DeprecatedOperations);
-
-  nsCOMPtr<nsIDOMProgressEvent> mInner;
-  nsCOMPtr<nsPIDOMWindow> mWindow;
-  uint64_t mCurProgress;
-  uint64_t mMaxProgress;
-};
-
 class nsXHRParseEndListener : public nsIDOMEventListener
 {
 public:
   NS_DECL_ISUPPORTS
   NS_IMETHOD HandleEvent(nsIDOMEvent *event)
   {
     nsCOMPtr<nsIXMLHttpRequest> xhr = do_QueryReferent(mXHR);
     if (xhr) {

--- a/dom/base/nsDOMClassInfo.cpp
+++ b/dom/base/nsDOMClassInfo.cpp
@@ -152,17 +152,16 @@
 #include "nsAutoPtr.h"
 #include "nsMemory.h"
 
 // Tranformiix
 #include "nsIDOMXPathEvaluator.h"
 #include "nsIXSLTProcessor.h"
 #include "nsIXSLTProcessorPrivate.h"
 
-#include "nsIDOMLSProgressEvent.h"
 #include "nsXMLHttpRequest.h"
 #include "nsIDOMSettingsManager.h"
 #include "nsIDOMContactManager.h"
 #include "nsIDOMPermissionSettings.h"
 #include "nsIDOMApplicationRegistry.h"
 
 #ifdef MOZ_B2G_RIL
 #include "nsIWifi.h"
@@ -197,17 +196,16 @@
 #include "nsIDOMHTMLCanvasElement.h"
 #include "nsIDOMHTMLEmbedElement.h"
 #include "nsIDOMHTMLIFrameElement.h"
 #include "nsIDOMHTMLInputElement.h"
 #include "nsIDOMHTMLObjectElement.h"
 #include "nsIDOMTimeRanges.h"
 #include "nsIDOMHTMLVideoElement.h"
 #include "nsIDOMHTMLAudioElement.h"
-#include "nsIDOMProgressEvent.h"
 #include "nsIDOMCSSCharsetRule.h"
 #include "nsIDOMCSSImportRule.h"
 #include "nsIDOMCSSMediaRule.h"
 #include "nsIDOMCSSFontFaceRule.h"
 #include "nsIDOMCSSMozDocumentRule.h"
 #include "nsIDOMCSSSupportsRule.h"
 #include "nsIDOMMozCSSKeyframeRule.h"
 #include "nsIDOMMozCSSKeyframesRule.h"
@@ -924,19 +922,16 @@ static nsDOMClassInfoData sClassInfoData
                            nsIXPCScriptable::WANT_GETPROPERTY |
                            nsIXPCScriptable::WANT_SETPROPERTY |
                            nsIXPCScriptable::WANT_DELPROPERTY |
                            nsIXPCScriptable::DONT_ENUM_STATIC_PROPS |
                            nsIXPCScriptable::WANT_NEWENUMERATE)
   NS_DEFINE_CLASSINFO_DATA(StorageItem, nsDOMGenericSH,
                            DOM_DEFAULT_SCRIPTABLE_FLAGS)
 
-  NS_DEFINE_CLASSINFO_DATA(XMLHttpProgressEvent, nsDOMGenericSH,
-                           DOM_DEFAULT_SCRIPTABLE_FLAGS)
-
   NS_DEFINE_CLASSINFO_DATA(ClientRect, nsDOMGenericSH,
                            DOM_DEFAULT_SCRIPTABLE_FLAGS)
 
   NS_DEFINE_CLASSINFO_DATA(XULCommandEvent, nsDOMGenericSH,
                            DOM_DEFAULT_SCRIPTABLE_FLAGS)
 
   NS_DEFINE_CLASSINFO_DATA(CommandEvent, nsDOMGenericSH,
                            DOM_DEFAULT_SCRIPTABLE_FLAGS)
@@ -2493,22 +2488,16 @@ nsDOMClassInfo::Init()
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMStorage)
   DOM_CLASSINFO_MAP_END
 
   DOM_CLASSINFO_MAP_BEGIN(StorageItem, nsIDOMStorageItem)
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMStorageItem)
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMToString)
   DOM_CLASSINFO_MAP_END
 
-  DOM_CLASSINFO_MAP_BEGIN_NO_CLASS_IF(XMLHttpProgressEvent, nsIDOMEvent)
-    DOM_CLASSINFO_MAP_ENTRY(nsIDOMLSProgressEvent)
-    DOM_CLASSINFO_MAP_ENTRY(nsIDOMProgressEvent)
-    DOM_CLASSINFO_EVENT_MAP_ENTRIES
-  DOM_CLASSINFO_MAP_END
-
   DOM_CLASSINFO_MAP_BEGIN(XULCommandEvent, nsIDOMXULCommandEvent)
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMXULCommandEvent)
     DOM_CLASSINFO_UI_EVENT_MAP_ENTRIES
   DOM_CLASSINFO_MAP_END
 
   DOM_CLASSINFO_MAP_BEGIN(CommandEvent, nsIDOMCommandEvent)
     DOM_CLASSINFO_MAP_ENTRY(nsIDOMCommandEvent)
     DOM_CLASSINFO_EVENT_MAP_ENTRIES

--- a/dom/base/nsDOMClassInfoClasses.h
+++ b/dom/base/nsDOMClassInfoClasses.h
@@ -174,19 +174,16 @@ DOMCI_CLASS(XPathExpression)
 DOMCI_CLASS(XPathNSResolver)
 DOMCI_CLASS(XPathResult)
 
 // WhatWG WebApps Objects
 DOMCI_CLASS(StorageObsolete)
 DOMCI_CLASS(Storage)
 DOMCI_CLASS(StorageItem)
 
-// XMLHttpRequest
-DOMCI_CLASS(XMLHttpProgressEvent)
-
 DOMCI_CLASS(ClientRect)
 
 DOMCI_CLASS(XULCommandEvent)
 DOMCI_CLASS(CommandEvent)
 DOMCI_CLASS(OfflineResourceList)
 
 DOMCI_CLASS(Blob)
 DOMCI_CLASS(File)

deleted file mode 100644
--- a/dom/interfaces/load-save/Makefile.in
+++ /dev/null
@@ -1,24 +0,0 @@
-# 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/.
-
-DEPTH		= @DEPTH@
-topsrcdir	= @top_srcdir@
-srcdir		= @srcdir@
-VPATH		= @srcdir@
-
-include $(DEPTH)/config/autoconf.mk
-
-MODULE		= dom
-XPIDL_MODULE	= dom_loadsave
-
-XPIDLSRCS =                                     \
-		nsIDOMLSProgressEvent.idl       \
-		$(NULL)
-
-include $(topsrcdir)/config/rules.mk
-
-XPIDL_FLAGS += \
-  -I$(topsrcdir)/dom/interfaces/base \
-  -I$(topsrcdir)/dom/interfaces/events \
-  $(NULL)

deleted file mode 100644
--- a/dom/interfaces/load-save/moz.build
+++ /dev/null
@@ -1,5 +0,0 @@
-# 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/.
-

deleted file mode 100644
--- a/dom/interfaces/load-save/nsIDOMLSProgressEvent.idl
+++ /dev/null
@@ -1,16 +0,0 @@
-/* -*- Mode: IDL; 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 "nsIDOMEvent.idl"
-
-interface nsIDOMLSInput;
-
-[scriptable, builtinclass, uuid(5343c259-78c1-4f20-a81f-5ddce4f0188e)]
-interface nsIDOMLSProgressEvent : nsIDOMEvent
-{
-  readonly attribute nsIDOMLSInput   input;
-  readonly attribute unsigned long   position;
-  readonly attribute unsigned long   totalSize;
-};

--- a/dom/locales/en-US/chrome/dom/dom.properties
+++ b/dom/locales/en-US/chrome/dom/dom.properties
@@ -55,18 +55,16 @@ SetAttributeNodeNSWarning=Use of setAttr
 RemoveAttributeNodeWarning=Use of removeAttributeNode() is deprecated. Use removeAttribute() instead.
 CreateAttributeWarning=Use of document.createAttribute() is deprecated. Use element.setAttribute() instead.
 CreateAttributeNSWarning=Use of document.createAttributeNS() is deprecated. Use element.setAttributeNS() instead.
 SpecifiedWarning=Use of attributes' specified attribute is deprecated. It always returns true.
 OwnerElementWarning=Use of attributes' ownerElement attribute is deprecated.
 NodeValueWarning=Use of attributes' nodeValue attribute is deprecated. Use value instead.
 TextContentWarning=Use of attributes' textContent attribute is deprecated. Use value instead.
 EnablePrivilegeWarning=Use of enablePrivilege is deprecated.  Please use code that runs with the system principal (e.g. an extension) instead.
-PositionWarning=Use of XMLHttpRequest's progress events' position attribute is deprecated.
-TotalSizeWarning=Use of XMLHttpRequest's progress events' totalSize attribute is deprecated.
 nsIJSONDecodeDeprecatedWarning=nsIJSON.decode is deprecated.  Please use JSON.parse instead.
 nsIJSONEncodeDeprecatedWarning=nsIJSON.encode is deprecated.  Please use JSON.stringify instead.
 nsIDOMWindowInternalWarning=Use of nsIDOMWindowInternal is deprecated. Use nsIDOMWindow instead.
 InputEncodingWarning=Use of inputEncoding is deprecated.
 # LOCALIZATION NOTE: Do not translate "MozBeforePaint" and "mozRequestAnimationFrame"
 MozBeforePaintWarning=MozBeforePaint events are no longer supported.  mozRequestAnimationFrame must be passed a non-null callback argument.
 FullScreenDeniedBlocked=Request for full-screen was denied because this domain has been blocked from full-screen by user.
 FullScreenDeniedDisabled=Request for full-screen was denied because full-screen API is disabled by user preference.

--- a/dom/moz.build
+++ b/dom/moz.build
@@ -14,17 +14,16 @@ interfaces = [
     'settings',
     'stylesheets',
     'sidebar',
     'css',
     'traversal',
     'range',
     'xbl',
     'xpath',
-    'load-save',
     'xul',
     'storage',
     'json',
     'offline',
     'geolocation',
     'notification',
     'permission',
     'svg',

--- a/js/xpconnect/src/dom_quickstubs.qsconf
+++ b/js/xpconnect/src/dom_quickstubs.qsconf
@@ -142,18 +142,16 @@ members = [
     'nsIDOMHTMLCanvasElement.width',
     'nsIDOMHTMLCanvasElement.height',
     'nsIDOMHTMLCanvasElement.getContext',
     'nsIDOMHTMLCanvasElement.toDataURL',
 
     # dom/interfaces/json - None.
     # All methods of nsIJSON call GetCurrentNativeCallContext.
 
-    # dom/interfaces/load-save - None.
-
     # dom/interfaces/offline - None.
 
     # dom/interfaces/range
     'nsIDOMRange.*',
 
     # dom/interfaces/sidebar - None.
 
     # dom/interfaces/smil - None.

--- a/mobile/android/installer/package-manifest.in
+++ b/mobile/android/installer/package-manifest.in
@@ -137,17 +137,16 @@
 @BINPATH@/components/dom_stylesheets.xpt
 @BINPATH@/components/dom_system.xpt
 @BINPATH@/components/dom_threads.xpt
 @BINPATH@/components/dom_traversal.xpt
 @BINPATH@/components/dom_views.xpt
 @BINPATH@/components/dom_xbl.xpt
 @BINPATH@/components/dom_xpath.xpt
 @BINPATH@/components/dom_xul.xpt
-@BINPATH@/components/dom_loadsave.xpt
 @BINPATH@/components/downloads.xpt
 @BINPATH@/components/editor.xpt
 @BINPATH@/components/embed_base.xpt
 @BINPATH@/components/extensions.xpt
 @BINPATH@/components/exthandler.xpt
 @BINPATH@/components/exthelper.xpt
 @BINPATH@/components/fastfind.xpt
 @BINPATH@/components/feeds.xpt

--- a/mobile/xul/installer/package-manifest.in
+++ b/mobile/xul/installer/package-manifest.in
@@ -186,17 +186,16 @@
 @BINPATH@/components/dom_sms.xpt
 @BINPATH@/components/dom_stylesheets.xpt
 @BINPATH@/components/dom_threads.xpt
 @BINPATH@/components/dom_traversal.xpt
 @BINPATH@/components/dom_views.xpt
 @BINPATH@/components/dom_xbl.xpt
 @BINPATH@/components/dom_xpath.xpt
 @BINPATH@/components/dom_xul.xpt
-@BINPATH@/components/dom_loadsave.xpt
 @BINPATH@/components/downloads.xpt
 @BINPATH@/components/editor.xpt
 @BINPATH@/components/embed_base.xpt
 @BINPATH@/components/extensions.xpt
 @BINPATH@/components/exthandler.xpt
 @BINPATH@/components/exthelper.xpt
 @BINPATH@/components/fastfind.xpt
 @BINPATH@/components/feeds.xpt