Simulate a user gesture in Fullscreen test so it can run on bots.

ppapi/tests/test_fullscreen.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 PAPPI_TESTS_TEST_FULLSCREEN_H_
 #define PAPPI_TESTS_TEST_FULLSCREEN_H_
 
 #include <string>
 
 #include "ppapi/cpp/fullscreen.h"
@@ skipping 14 matching lines @@
   // TestCase implementation.
   virtual bool Init();
   virtual void RunTests(const std::string& filter);
   virtual bool HandleInputEvent(const pp::InputEvent& event);
   virtual void DidChangeView(const pp::Rect& position, const pp::Rect& clip);
 
  private:
   std::string TestGetScreenSize();
   std::string TestNormalToFullscreenToNormal();
 
+  void SimulateUserGesture();
+
   void FailFullscreenTest(const std::string& error);
 
   bool GotError();
   std::string Error();
 
   std::string error_;
 
   pp::Fullscreen screen_mode_;
   pp::Size screen_size_;
   pp::Rect normal_position_;
 
   bool fullscreen_pending_;
   bool normal_pending_;
   bool saw_first_fullscreen_didchangeview;
   pp::Graphics2D graphics2d_fullscreen_;
   pp::Graphics2D graphics2d_normal_;
   TestCompletionCallback set_fullscreen_true_callback_;
   TestCompletionCallback fullscreen_callback_;
   TestCompletionCallback normal_callback_;
 };
 
 #endif  // PAPPI_TESTS_TEST_FULLSCREEN_H_