Create MouseEventManager and EventHandlingUtil

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GestureManager_h
 #define GestureManager_h
 
 #include "core/CoreExport.h"
 #include "core/frame/LocalFrame.h"
 #include "core/layout/HitTestRequest.h"
 #include "core/page/EventWithHitTestResults.h"
 #include "platform/PlatformEvent.h"
 #include "public/platform/WebInputEventResult.h"
 
 namespace blink {
 
 class ScrollManager;
 class SelectionController;
 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*,
         SelectionController*);
     ~GestureManager();
     DECLARE_TRACE();
 
     void clear();
 
     HitTestRequest::HitTestRequestType getHitTypeForGestureType(PlatformEvent::EventType);
@@ skipping 14 matching lines @@
 
     WebInputEventResult sendContextMenuEventForGesture(const GestureEventWithHitTestResults&);
 
     FrameHost* frameHost() const;
 
     // NOTE: If adding a new field to this class please ensure that it is
     // cleared if needed in |GestureManager::clear()|.
 
     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
     // firing for the current gesture sequence (i.e. until next GestureTapDown).
     bool m_suppressMouseEventsFromGestures;
 
     bool m_longTapShouldInvokeContextMenu;
 
     const Member<SelectionController> m_selectionController;
 
     double m_lastShowPressTimestamp;
 };
 
 } // namespace blink
 
 #endif // GestureManager_h