Revert of Add use count for click retargeting due to capture

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

Index: third_party/WebKit/Source/core/input/MouseEventManager.h
diff --git a/third_party/WebKit/Source/core/input/MouseEventManager.h b/third_party/WebKit/Source/core/input/MouseEventManager.h
index 64946a175db4a931b54f4efc3753b9dcd1577e3a..87dfb199ffebdb7f0e169cc550fe1df3d2dcb4f5 100644
--- a/third_party/WebKit/Source/core/input/MouseEventManager.h
+++ b/third_party/WebKit/Source/core/input/MouseEventManager.h
@@ -58,8 +58,7 @@ class CORE_EXPORT MouseEventManager final
 
   WebInputEventResult dispatchMouseClickIfNeeded(Node* target,
                                                  const WebMouseEvent&,
-                                                 const String& canvasRegionId,
-                                                 Node* targetWithoutCapture);
+                                                 const String& canvasRegionId);
 
   WebInputEventResult dispatchDragSrcEvent(const AtomicString& eventType,
                                            const WebMouseEvent&);