Revert of Move UndoStack from Page to Editor

third_party/WebKit/Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 24 matching lines @@
 #include "core/loader/FrameLoader.h"
 
 #include "bindings/core/v8/DOMWrapperWorld.h"
 #include "bindings/core/v8/ScriptController.h"
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "core/HTMLNames.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/dom/ViewportDescription.h"
 #include "core/editing/Editor.h"
+#include "core/editing/commands/UndoStack.h"
 #include "core/events/GestureEvent.h"
 #include "core/events/KeyboardEvent.h"
 #include "core/events/MouseEvent.h"
 #include "core/events/PageTransitionEvent.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/fetch/ResourceLoader.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 206 matching lines @@
 {
     NavigationCounterForUnload counter;
 
     // If the frame is unloading, the provisional loader should no longer be
     // protected. It will be detached soon.
     m_protectProvisionalLoader = false;
     saveScrollState();
 
     if (m_frame->document() && !SVGImage::isInSVGImage(m_frame->document()))
         m_frame->document()->dispatchUnloadEvents();
+
+    if (Page* page = m_frame->page())
+        page->undoStack().didUnloadFrame(*m_frame);
 }
 
 void FrameLoader::didExplicitOpen()
 {
     // Calling document.open counts as committing the first real document load.
     if (!m_stateMachine.committedFirstRealDocumentLoad())
         m_stateMachine.advanceTo(FrameLoaderStateMachine::CommittedFirstRealLoad);
 
     // Only model a document.open() as part of a navigation if its parent is not done
     // or in the process of completing.
@@ skipping 1333 matching lines @@
     tracedValue->setString("documentLoaderURL", m_documentLoader ? m_documentLoader->url() : String());
     return tracedValue;
 }
 
 inline void FrameLoader::takeObjectSnapshot() const
 {
     TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID("loading", "FrameLoader", this, toTracedValue());
 }
 
 } // namespace blink