Let PageClickTracker use onMouseDown

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 25416d60fc0cf3330e0a397c96bab9f891ce9aaa..7e9e88423273da64d755891045ad55ec1ebde5df 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -328,6 +328,8 @@ class CONTENT_EXPORT RenderViewImpl
   virtual bool isPointerLocked();
   virtual void didHandleGestureEvent(const blink::WebGestureEvent& event,
                                      bool event_cancelled) override;
+  virtual void onMouseDown(const blink::WebNode& mouse_down_node) override;
+
   virtual void initializeLayerTreeView() override;
 
   // blink::WebViewClient implementation --------------------------------------
@@ -463,7 +465,6 @@ class CONTENT_EXPORT RenderViewImpl
   void DidHandleKeyEvent() override;
   bool WillHandleMouseEvent(const blink::WebMouseEvent& event) override;
   bool WillHandleGestureEvent(const blink::WebGestureEvent& event) override;
-  void DidHandleMouseEvent(const blink::WebMouseEvent& event) override;
   bool HasTouchEventHandlersAt(const gfx::Point& point) const override;
   void OnSetFocus(bool enable) override;
   void OnWasHidden() override;