[oilpan] Move EventHandler to the heap

Source/core/page/EventHandler.h

Index: Source/core/page/EventHandler.h
diff --git a/Source/core/page/EventHandler.h b/Source/core/page/EventHandler.h
index 2bc1521d570aeb9d6335a91e0df24c334f5619cc..c3231db99d998f40443f67ab367372ac1587b102 100644
--- a/Source/core/page/EventHandler.h
+++ b/Source/core/page/EventHandler.h
@@ -87,10 +87,16 @@ extern const int GeneralDragHysteresis;
 enum AppendTrailingWhitespace { ShouldAppendTrailingWhitespace, DontAppendTrailingWhitespace };
 enum CheckDragHysteresis { ShouldCheckDragHysteresis, DontCheckDragHysteresis };
 
-class EventHandler {
-    WTF_MAKE_NONCOPYABLE(EventHandler);
+class EventHandler : public HeapAllocatedFinalized<EventHandler> {
+    DECLARE_GC_MAP
+    DEFINE_SELF_HANDLE(EventHandler)
+    WTF_MAKE_NONCOPYABLE(EventHandler)
 public:
-    explicit EventHandler(Frame*);
+    static RESULT(EventHandler) create(Frame* frame)
+    {
+        return adopt(new EventHandler(frame));
+    }
+
     ~EventHandler();
 
     void clear();
@@ -208,7 +214,11 @@ public:
 
     bool useHandCursor(HANDLE_FORMAL(Node), bool isOverLink, bool shiftKey);
 
+    void accept(Visitor*) const;
+
 private:
+    explicit EventHandler(Frame*);
+
     static DragState& dragState();
     static const double TextDragDelay;
     
@@ -318,7 +328,7 @@ private:
 
     bool m_mousePressed;
     bool m_capturesDragging;
-    ANNOTATED_FIELD(Persistent<Node>, m_mousePressNode);
+    Member<Node> m_mousePressNode;
 
     bool m_mouseDownMayStartSelect;
     bool m_mouseDownMayStartDrag;
@@ -347,22 +357,22 @@ private:
 
     RenderLayer* m_resizeLayer;
 
-    ANNOTATED_FIELD(Persistent<Node>, m_capturingMouseEventsNode);
+    Member<Node> m_capturingMouseEventsNode;
     bool m_eventHandlerWillResetCapturingMouseEventsNode;
     
-    ANNOTATED_FIELD(Persistent<Node>, m_nodeUnderMouse);
-    ANNOTATED_FIELD(Persistent<Node>, m_lastNodeUnderMouse);
+    Member<Node> m_nodeUnderMouse;
+    Member<Node> m_lastNodeUnderMouse;
     RefPtr<Frame> m_lastMouseMoveEventSubframe;
     RefPtr<Scrollbar> m_lastScrollbarUnderMouse;
     Cursor m_currentMouseCursor;
 
     int m_clickCount;
-    ANNOTATED_FIELD(Persistent<Node>, m_clickNode);
+    Member<Node> m_clickNode;
 
-    ANNOTATED_FIELD(Persistent<Node>, m_dragTarget);
+    Member<Node> m_dragTarget;
     bool m_shouldOnlyFireDragOverEvent;
     
-    ANNOTATED_FIELD(Persistent<HTMLFrameSetElement>, m_frameSetBeingResized);
+    Member<HTMLFrameSetElement> m_frameSetBeingResized;
 
     LayoutSize m_offsetFromResizeCorner; // In the coords of m_resizeLayer.
     
@@ -374,20 +384,19 @@ private:
     PlatformMouseEvent m_mouseDown;
     RefPtr<UserGestureToken> m_lastMouseDownUserGestureToken;
 
-    ANNOTATED_FIELD(Persistent<Node>, m_latchedWheelEventNode);
+    Member<Node> m_latchedWheelEventNode;
     bool m_widgetIsLatched;
 
-    ANNOTATED_FIELD(Persistent<Node>, m_previousWheelScrolledNode);
+    Member<Node> m_previousWheelScrolledNode;
 
-    typedef CollectionRoot<HashMap<int, Member<EventTarget> > > TouchTargetMap;
-    ANNOTATED_FIELD(TouchTargetMap, m_originatingTouchPointTargets);
-    ANNOTATED_FIELD(Persistent<Document>, m_originatingTouchPointDocument);
+    HashMap<int, Member<EventTarget> > m_originatingTouchPointTargets;
+    Member<Document> m_originatingTouchPointDocument;
     unsigned m_originatingTouchPointTargetKey;
     bool m_touchPressed;
 
-    ANNOTATED_FIELD(Persistent<Node>, m_scrollGestureHandlingNode);
+    Member<Node> m_scrollGestureHandlingNode;
     bool m_lastHitTestResultOverWidget;
-    ANNOTATED_FIELD(Persistent<Node>, m_previousGestureScrolledNode);
+    Member<Node> m_previousGestureScrolledNode;
     RefPtr<Scrollbar> m_scrollbarHandlingScrollGesture;
 
     double m_maxMouseMovedDuration;