Virtualize EventDispatchMediator creation and cleanup calling.

Source/core/events/MouseEvent.h

Index: Source/core/events/MouseEvent.h
diff --git a/Source/core/events/MouseEvent.h b/Source/core/events/MouseEvent.h
index 8c2e2d26902dbd8f4c50b8cefc55917f1e785347..ccb50aff8e875fedbadbb9e3592f7364206e3081 100644
--- a/Source/core/events/MouseEvent.h
+++ b/Source/core/events/MouseEvent.h
@@ -92,6 +92,11 @@ public:
     bool isDragEvent() const final;
     int which() const final;
 
+    void setTrusted(bool trusted) { m_trusted = trusted; }
+    bool isTrusted() const { return m_trusted; }
+
+    PassRefPtrWillBeRawPtr<EventDispatchMediator> createMediator() override;
+
     DECLARE_VIRTUAL_TRACE();
 
 protected:
@@ -112,6 +117,7 @@ private:
     RefPtrWillBeMember<EventTarget> m_relatedTarget;
     PersistentWillBeMember<DataTransfer> m_dataTransfer;
     PlatformMouseEvent::SyntheticEventType m_syntheticEventType;
+    unsigned m_trusted : 1;

[tkent, 2015/07/15 00:09:16]

The member name should be |m_isTrusted|.

[dtapuska, 2015/07/15 01:46:17]

Done.

 };
 
 class SimulatedMouseEvent final : public MouseEvent {
@@ -127,16 +133,13 @@ private:
 
 class MouseEventDispatchMediator final : public EventDispatchMediator {
 public:
-    enum MouseEventType { SyntheticMouseEvent, NonSyntheticMouseEvent};
-    static PassRefPtrWillBeRawPtr<MouseEventDispatchMediator> create(PassRefPtrWillBeRawPtr<MouseEvent>, MouseEventType = NonSyntheticMouseEvent);
+    static PassRefPtrWillBeRawPtr<MouseEventDispatchMediator> create(PassRefPtrWillBeRawPtr<MouseEvent>);
 
 private:
-    explicit MouseEventDispatchMediator(PassRefPtrWillBeRawPtr<MouseEvent>, MouseEventType);
+    explicit MouseEventDispatchMediator(PassRefPtrWillBeRawPtr<MouseEvent>);
     MouseEvent& event() const;
 
     bool dispatchEvent(EventDispatcher&) const override;
-    bool isSyntheticMouseEvent() const { return m_mouseEventType == SyntheticMouseEvent; }
-    MouseEventType m_mouseEventType;
 };
 
 DEFINE_EVENT_TYPE_CASTS(MouseEvent);