Add use count for click retargeting due to capture

third_party/WebKit/Source/core/input/MouseEventManager.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 MouseEventManager_h
 #define MouseEventManager_h
 
 #include "core/CoreExport.h"
 #include "core/dom/SynchronousMutationObserver.h"
 #include "core/input/BoundaryEventDispatcher.h"
@@ skipping 40 matching lines @@
                                          bool checkForListener = false);
 
   WebInputEventResult setMousePositionAndDispatchMouseEvent(
       Node* targetNode,
       const String& canvasRegionId,
       const AtomicString& eventType,
       const WebMouseEvent&);
 
   WebInputEventResult dispatchMouseClickIfNeeded(Node* target,
                                                  const WebMouseEvent&,
-                                                 const String& canvasRegionId);
+                                                 const String& canvasRegionId,
+                                                 Node* targetWithoutCapture);
 
   WebInputEventResult dispatchDragSrcEvent(const AtomicString& eventType,
                                            const WebMouseEvent&);
   WebInputEventResult dispatchDragEvent(const AtomicString& eventType,
                                         Node* target,
                                         const WebMouseEvent&,
                                         DataTransfer*);
 
   // Resets the internal state of this object.
   void clear();
@@ skipping 160 matching lines @@
   WebMouseEvent m_mouseDown;
 
   LayoutPoint m_dragStartPos;
 
   TaskRunnerTimer<MouseEventManager> m_fakeMouseMoveEventTimer;
 };
 
 }  // namespace blink
 
 #endif  // MouseEventManager_h