Add the feature to retain the user gesture in the extension callback

chrome/renderer/extensions/dispatcher.h

 // Copyright (c) 2012 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_RENDERER_EXTENSIONS_DISPATCHER_H_
 #define CHROME_RENDERER_EXTENSIONS_DISPATCHER_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 104 matching lines @@
   bool IsAdblockPlusWithWebRequestInstalled() const {
     return webrequest_adblock_plus_;
   }
   bool IsOtherExtensionWithWebRequestInstalled() const {
     return webrequest_other_;
   }
 
   void OnExtensionResponse(int request_id,
                            bool success,
                            const base::ListValue& response,
-                           const std::string& error);
+                           const std::string& error,
+                           bool user_gesture);
 
   // Checks that the current context contains an extension that has permission
   // to execute the specified function. If it does not, a v8 exception is thrown
   // and the method returns false. Otherwise returns true.
   bool CheckContextAccessToExtensionAPI(
       const std::string& function_name, ChromeV8Context* context) const;
 
   // Dispatches the event named |event_name| to all render views.
   void DispatchEvent(const std::string& extension_id,
                      const std::string& event_name) const;
@@ skipping 178 matching lines @@
 
   // Mapping of port IDs to tabs. If there is no tab, the value would be -1.
   std::map<int, int> port_to_tab_id_map_;
 
   DISALLOW_COPY_AND_ASSIGN(Dispatcher);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_RENDERER_EXTENSIONS_DISPATCHER_H_