[Extensions] Fix a data race in ChromeExtensionMessageFilter.

chrome/browser/renderer_host/chrome_extension_message_filter.h

 // Copyright 2014 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_RENDERER_HOST_CHROME_EXTENSION_MESSAGE_FILTER_H_
 #define CHROME_BROWSER_RENDERER_HOST_CHROME_EXTENSION_MESSAGE_FILTER_H_
 
 #include <string>
+#include <vector>
 
 #include "base/macros.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/public/browser/browser_message_filter.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Profile;
 struct ExtensionHostMsg_APIActionOrEvent_Params;
 struct ExtensionHostMsg_DOMAction_Params;
@@ skipping 45 matching lines @@
                           const extensions::PortId& port_id);
   void OnOpenMessagePort(int routing_id, const extensions::PortId& port_id);
   void OnCloseMessagePort(int routing_id,
                           const extensions::PortId& port_id,
                           bool force_close);
   void OnPostMessage(const extensions::PortId& port_id,
                      const extensions::Message& message);
   void OnGetExtMessageBundle(const std::string& extension_id,
                              IPC::Message* reply_msg);
   void OnGetExtMessageBundleOnBlockingPool(
-      const std::string& extension_id,
+      const std::vector<base::FilePath>& extension_paths,
+      const std::string& main_extension_id,
+      const std::string& default_locale,
       IPC::Message* reply_msg);
   void OnAddAPIActionToExtensionActivityLog(
       const std::string& extension_id,
       const ExtensionHostMsg_APIActionOrEvent_Params& params);
   void OnAddBlockedCallToExtensionActivityLog(
       const std::string& extension_id,
       const std::string& function_name);
   void OnAddDOMActionToExtensionActivityLog(
       const std::string& extension_id,
       const ExtensionHostMsg_DOMAction_Params& params);
@@ skipping 22 matching lines @@
   extensions::ActivityLog* activity_log_;
 
   scoped_refptr<extensions::InfoMap> extension_info_map_;
 
   content::NotificationRegistrar notification_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeExtensionMessageFilter);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_CHROME_EXTENSION_MESSAGE_FILTER_H_