Delay unregistering handlers when a document is detached

Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 12 matching lines @@
 #include "core/dom/ClientRectList.h"
 #include "core/dom/DocumentMarkerController.h"
 #include "core/dom/StyleEngine.h"
 #include "core/dom/VisitedLinkState.h"
 #include "core/editing/Caret.h"
 #include "core/editing/UndoStack.h"
 #include "core/events/Event.h"
 #include "core/fetch/ResourceFetcher.h"
 #include "core/frame/DOMTimer.h"
 #include "core/frame/LocalDOMWindow.h"
-#include "core/frame/EventHandlerRegistry.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/RemoteFrame.h"
 #include "core/frame/RemoteFrameView.h"
 #include "core/frame/Settings.h"
 #include "core/inspector/InspectorController.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/loader/FrameLoader.h"
 #include "core/loader/HistoryItem.h"
@@ skipping 166 matching lines @@
     m_mainFrame = mainFrame;
 }
 
 void Page::documentDetached(Document* document)
 {
     m_multisamplingChangedObservers.clear();
     m_pointerLockController->documentDetached(document);
     m_contextMenuController->documentDetached(document);
     if (m_validationMessageClient)
         m_validationMessageClient->documentDetached(*document);
-    m_frameHost->eventHandlerRegistry().documentDetached(*document);
 }
 
 bool Page::openedByDOM() const
 {
     return m_openedByDOM;
 }
 
 void Page::setOpenedByDOM()
 {
     m_openedByDOM = true;
@@ skipping 425 matching lines @@
     , spellCheckerClient(0)
     , storageClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace blink