Create MouseEventManager and EventHandlingUtil

third_party/WebKit/Source/core/input/GestureManager.h

Index: third_party/WebKit/Source/core/input/GestureManager.h
diff --git a/third_party/WebKit/Source/core/input/GestureManager.h b/third_party/WebKit/Source/core/input/GestureManager.h
index 282c63d4397c1e1017af85547c1fd698842bef0e..c4011de99e9205d78eb2895a94c1c9b483274bb7 100644
--- a/third_party/WebKit/Source/core/input/GestureManager.h
+++ b/third_party/WebKit/Source/core/input/GestureManager.h
@@ -20,9 +20,8 @@ class PointerEventManager;
 
 // This class takes care of gestures and delegating the action based on the
 // gesture to the responsible class.
-class CORE_EXPORT GestureManager {
+class CORE_EXPORT GestureManager final : public GarbageCollectedFinalized<GestureManager> {

[haraken, 2016/09/01 23:31:15]

Maybe you can drop 'Finalized' and remove the destructor.

[Navid Zolghadr, 2016/09/02 16:36:45]

Done.

     WTF_MAKE_NONCOPYABLE(GestureManager);
-    DISALLOW_NEW();
 
 public:
     GestureManager(LocalFrame*, ScrollManager*, PointerEventManager*,
@@ -57,8 +56,8 @@ private:
 
     const Member<LocalFrame> m_frame;
 
-    ScrollManager* m_scrollManager;
-    PointerEventManager* m_pointerEventManager;
+    Member<ScrollManager> m_scrollManager;
+    Member<PointerEventManager> m_pointerEventManager;
 
     // Set on GestureTapDown if the |pointerdown| event corresponding to the
     // triggering |touchstart| event was canceled. This suppresses mouse event