Revert 138188

Source/WebCore/dom/Document.h

Index: Source/WebCore/dom/Document.h
===================================================================
--- Source/WebCore/dom/Document.h	(revision 138208)
+++ Source/WebCore/dom/Document.h	(working copy)
@@ -207,8 +207,6 @@
 };
 const int numNodeListInvalidationTypes = InvalidateOnAnyAttrChange + 1;
 
-typedef HashCountedSet<Node*> TouchEventTargetSet;
-
 class Document : public ContainerNode, public TreeScope, public ScriptExecutionContext {
 public:
     static PassRefPtr<Document> create(Frame* frame, const KURL& url)
@@ -1120,24 +1118,14 @@
     void didRemoveWheelEventHandler();
 
 #if ENABLE(TOUCH_EVENTS)
-    bool hasTouchEventHandlers() const { return (m_touchEventTargets.get()) ? m_touchEventTargets->size() : false; }
+    unsigned touchEventHandlerCount() const { return m_touchEventHandlerCount; }
 #else
-    bool hasTouchEventHandlers() const { return false; }
+    unsigned touchEventHandlerCount() const { return 0; }
 #endif
 
-    void didAddTouchEventHandler(Node*);
-    void didRemoveTouchEventHandler(Node*);
+    void didAddTouchEventHandler();
+    void didRemoveTouchEventHandler();
 
-#if ENABLE(TOUCH_EVENT_TRACKING)
-    void didRemoveEventTargetNode(Node*);
-#endif
-
-#if ENABLE(TOUCH_EVENTS)
-    const TouchEventTargetSet* touchEventTargets() const { return m_touchEventTargets.get(); }
-#else
-    const TouchEventTargetSet* touchEventTargets() const { return 0; }
-#endif
-
     bool visualUpdatesAllowed() const { return m_visualUpdatesAllowed; }
 
 #if ENABLE(MICRODATA)
@@ -1515,7 +1503,7 @@
     
     unsigned m_wheelEventHandlerCount;
 #if ENABLE(TOUCH_EVENTS)
-    OwnPtr<TouchEventTargetSet> m_touchEventTargets;
+    unsigned m_touchEventHandlerCount;
 #endif
 
 #if ENABLE(REQUEST_ANIMATION_FRAME)