Determine the element location and click synchronously on the renderer.

chrome/browser/automation/mock_tab_event_observer.h

 // Copyright (c) 2011 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 CHROME_BROWSER_AUTOMATION_MOCK_TAB_EVENT_OBSERVER_H_
 #define CHROME_BROWSER_AUTOMATION_MOCK_TAB_EVENT_OBSERVER_H_
 #pragma once
 
+#include <string>
+
 #include "chrome/browser/automation/automation_tab_helper.h"
 #include "testing/gmock/include/gmock/gmock.h"
+#include "ui/gfx/point.h"
 
 class MockTabEventObserver : public TabEventObserver {
  public:
   MockTabEventObserver();
   // Convenience constructor for observing the |tab_helper| on creation.
   explicit MockTabEventObserver(AutomationTabHelper* tab_helper);
   virtual ~MockTabEventObserver();
 
   // Promote these to public for testing purposes.
   void StartObserving(AutomationTabHelper* tab_helper);
   void StopObserving(AutomationTabHelper* tab_helper);
 
   MOCK_METHOD1(OnFirstPendingLoad, void(content::WebContents* tab_contents));
   MOCK_METHOD1(OnNoMorePendingLoads, void(content::WebContents* tab_contents));
+  MOCK_METHOD1(OnWillProcessMouseEventAt, void(const gfx::Point& point));
+  MOCK_METHOD2(OnProcessMouseEventACK,
+               void(bool success, const std::string& error_msg));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockTabEventObserver);
 };
 
 #endif  // CHROME_BROWSER_AUTOMATION_MOCK_TAB_EVENT_OBSERVER_H_