Revert 177812 "Migrate touch events to EventHandlerRegistry"

trunk/Source/core/frame/EventHandlerRegistry.h

Index: trunk/Source/core/frame/EventHandlerRegistry.h
===================================================================
--- trunk/Source/core/frame/EventHandlerRegistry.h	(revision 177995)
+++ trunk/Source/core/frame/EventHandlerRegistry.h	(working copy)
@@ -28,7 +28,6 @@
     enum EventHandlerClass {
         ScrollEvent,
         WheelEvent,
-        TouchEvent,
 #if ASSERT_ENABLED
         // Additional event categories for verifying handler tracking logic.
         EventsForTesting,
@@ -48,15 +47,13 @@
     void didRemoveEventHandler(EventTarget&, const AtomicString& eventType);
     void didRemoveEventHandler(EventTarget&, EventHandlerClass);
     void didRemoveAllEventHandlers(EventTarget&);
-
     void didMoveIntoFrameHost(EventTarget&);
     void didMoveOutOfFrameHost(EventTarget&);
-    static void didMoveBetweenFrameHosts(EventTarget&, FrameHost* oldFrameHost, FrameHost* newFrameHost);
 
-    // Either |documentDetached| or |didMove{Into,OutOf,Between}FrameHosts| must
-    // be called whenever the FrameHost that is associated with a registered event
-    // target changes. This ensures the registry does not end up with stale
-    // references to handlers that are no longer related to it.
+    // Either |documentDetached| or |didMoveOutOfFrameHost| must be called
+    // whenever the FrameHost that is associated with a registered event target
+    // changes. This ensures the registry does not end up with stale references
+    // to handlers that are no longer related to it.
     void documentDetached(Document&);
 
     void trace(Visitor*);
@@ -82,11 +79,6 @@
     // between the two cases.
     void notifyHasHandlersChanged(EventHandlerClass, bool hasActiveHandlers);
 
-    // Called to notify clients whenever a single event handler target is
-    // registered or unregistered. If several handlers are registered for the
-    // same target, only the first registration will trigger this notification.
-    void notifyDidAddOrRemoveEventHandlerTarget(EventHandlerClass);
-
     // Record a change operation to a given event handler class and notify any
     // parent registry and other clients accordingly.
     void updateEventHandlerOfType(ChangeOperation, const AtomicString& eventType, EventTarget*);