Pepper: Add a function to PPB_Flash to check if a rect is topmost.

ppapi/cpp/private/flash.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 PPAPI_CPP_PRIVATE_FLASH_H_
 #define PPAPI_CPP_PRIVATE_FLASH_H_
 
 #include <string>
 
 #include "ppapi/c/pp_stdint.h"
@@ skipping 33 matching lines @@
                          const PP_Point glyph_advances[]);
   static Var GetProxyForURL(Instance* instance, const std::string& url);
   static int32_t Navigate(const URLRequestInfo& request_info,
                           const std::string& target,
                           bool from_user_action);
   static void RunMessageLoop(Instance* instance);
   static void QuitMessageLoop(Instance* instance);
   static double GetLocalTimeZoneOffset(Instance* instance, PP_Time t);
   static Var GetCommandLineArgs(Module* module);
   static void PreloadFontWin(const void* logfontw);
+  static bool IsRectTopmost(Instance* instance, const Rect& rect);
+  static int32_t InvokePrinting(Instance* instance);
+  static void UpdateActivity(Instance* instance);
+
 };
 
 }  // namespace flash
 }  // namespace pp
 
 #endif  // PPAPI_CPP_PRIVATE_FLASH_H_