Modify gesture event types for WebView-tag scroll bubbling.

Source/core/events/WheelEvent.h

Index: Source/core/events/WheelEvent.h
diff --git a/Source/core/events/WheelEvent.h b/Source/core/events/WheelEvent.h
index 6659e2d06aff20472853b7f536cc647c96e362a9..60b0727a85b96a36f37ffb53a03569c816dcd2ef 100644
--- a/Source/core/events/WheelEvent.h
+++ b/Source/core/events/WheelEvent.h
@@ -61,10 +61,10 @@ public:
     static PassRefPtrWillBeRawPtr<WheelEvent> create(const FloatPoint& wheelTicks,
         const FloatPoint& rawDelta, unsigned deltaMode, PassRefPtrWillBeRawPtr<AbstractView> view,
         const IntPoint& screenLocation, const IntPoint& windowLocation,
-        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short buttons, bool canScroll, bool hasPreciseScrollingDeltas, RailsMode railsMode)
+        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short buttons, bool canScroll, int resendingPluginId, bool hasPreciseScrollingDeltas, RailsMode railsMode)
     {
         return adoptRefWillBeNoop(new WheelEvent(wheelTicks, rawDelta, deltaMode, view,
-            screenLocation, windowLocation, ctrlKey, altKey, shiftKey, metaKey, buttons, canScroll, hasPreciseScrollingDeltas, railsMode));
+            screenLocation, windowLocation, ctrlKey, altKey, shiftKey, metaKey, buttons, canScroll, resendingPluginId, hasPreciseScrollingDeltas, railsMode));
     }
 
     double deltaX() const { return m_deltaX; } // Positive when scrolling right.
@@ -77,6 +77,7 @@ public:
     float ticksX() const { return static_cast<float>(m_wheelDelta.x()) / TickMultiplier; }
     float ticksY() const { return static_cast<float>(m_wheelDelta.y()) / TickMultiplier; }
     bool canScroll() const { return m_canScroll; }
+    int resendingPluginId() const { return m_resendingPluginId; }
     bool hasPreciseScrollingDeltas() const { return m_hasPreciseScrollingDeltas; }
     RailsMode railsMode() const { return m_railsMode; }
 
@@ -93,7 +94,7 @@ private:
     WheelEvent(const AtomicString&, const WheelEventInit&);
     WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta,
         unsigned, PassRefPtrWillBeRawPtr<AbstractView>, const IntPoint& screenLocation, const IntPoint& windowLocation,
-        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short buttons, bool canScroll, bool hasPreciseScrollingDeltas, RailsMode);
+        bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, unsigned short buttons, bool canScroll, int resendingPluginId, bool hasPreciseScrollingDeltas, RailsMode);
 
     IntPoint m_wheelDelta;
     double m_deltaX;
@@ -101,6 +102,7 @@ private:
     double m_deltaZ;
     unsigned m_deltaMode;
     bool m_canScroll;
+    int m_resendingPluginId;
     bool m_hasPreciseScrollingDeltas;
     RailsMode m_railsMode;
 };