Track scroll event handlers in nested documents

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 25 matching lines @@
 #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"
 #include "core/page/AutoscrollController.h"
 #include "core/page/Chrome.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/ContextMenuController.h"
 #include "core/page/DragController.h"
+#include "core/page/EventHandlerRegistry.h"
 #include "core/page/FocusController.h"
 #include "core/page/FrameTree.h"
 #include "core/page/PageLifecycleNotifier.h"
 #include "core/page/PointerLockController.h"
 #include "core/page/StorageClient.h"
 #include "core/page/ValidationMessageClient.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/rendering/FastTextAutosizer.h"
 #include "core/rendering/RenderView.h"
 #include "core/rendering/TextAutosizer.h"
@@ skipping 142 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);
+    EventHandlerRegistry::from(*this)->documentDetached(*document);
 }
 
 bool Page::openedByDOM() const
 {
     return m_openedByDOM;
 }
 
 void Page::setOpenedByDOM()
 {
     m_openedByDOM = true;
@@ skipping 327 matching lines @@
     Supplementable<Page>::trace(visitor);
 }
 
 void Page::clearWeakMembers(Visitor* visitor)
 {
 #if ENABLE(INPUT_SPEECH)
     SpeechInput* input = SpeechInput::from(this);
     if (input)
         input->clearWeakMembers(visitor);
 #endif
+    EventHandlerRegistry::from(*this)->clearWeakMembers(visitor);
 }
 
 void Page::willBeDestroyed()
 {
     // Disable all agents prior to resetting the frame view.
     m_inspectorController->willBeDestroyed();
 
     m_mainFrame->setView(nullptr);
 
     allPages().remove(this);
@@ skipping 27 matching lines @@
     , spellCheckerClient(0)
     , storageClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace WebCore