Add EventHandlerRegistry

Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 927 matching lines @@
     void serviceScriptedAnimations(double monotonicAnimationStartTime);
 
     virtual EventTarget* errorEventTarget() OVERRIDE FINAL;
     virtual void logExceptionToConsole(const String& errorMessage, const String& sourceURL, int lineNumber, int columnNumber, PassRefPtr<ScriptCallStack>) OVERRIDE FINAL;
 
     void initDNSPrefetch();
 
     double lastHandledUserGestureTimestamp() const { return m_lastHandledUserGestureTimestamp; }
     void resetLastHandledUserGestureTimestamp();
 
+    // TODO: Remove all of this.
     bool hasTouchEventHandlers() const { return (m_touchEventTargets.get()) ? m_touchEventTargets->size() : false; }
 
     // Called when a single touch event handler has been added or removed for a node.
     // The Node should always be in this Document, except for child Documents which report
     // themselves to their parent exactly once if they have any touch handlers.
     // Handlers added/removed from the DOMWindow are reported as the Document.
     void didAddTouchEventHandler(Node*);
     void didRemoveTouchEventHandler(Node* handler) { didRemoveTouchEventHandler(handler, false); }
 
     // Called whenever all touch event handlers have been removed for a node (such as when the
@@ skipping 442 matching lines @@
 inline bool Node::isDocumentNode() const
 {
     return this == document();
 }
 
 Node* eventTargetNodeForDocument(Document*);
 
 } // namespace WebCore
 
 #endif // Document_h