Extensions handler: OnCheckMediaFile is not used

chrome/utility/extensions/extensions_handler.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_UTILITY_EXTENSIONS_EXTENSIONS_HANDLER_H_
 #define CHROME_UTILITY_EXTENSIONS_EXTENSIONS_HANDLER_H_
 
 #include <stdint.h>
 
 #include "base/base64.h"
@@ skipping 30 matching lines @@
   static void ExposeInterfacesToBrowser(
       service_manager::InterfaceRegistry* registry,
       ChromeContentUtilityClient* utility_client,
       bool running_elevated);
 
   // UtilityMessageHandler:
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
   // IPC message handlers.
-  void OnCheckMediaFile(int64_t milliseconds_of_decoding,
-                        const IPC::PlatformFileForTransit& media_file);
-
 #if defined(OS_WIN)
   void OnParseITunesPrefXml(const std::string& itunes_xml_data);
 #endif  // defined(OS_WIN)
 
 #if defined(OS_WIN) || defined(OS_MACOSX)
   void OnParseITunesLibraryXmlFile(
       const IPC::PlatformFileForTransit& itunes_library_file);
 
   void OnParsePicasaPMPDatabase(
       const picasa::AlbumTableFilesForTransit& album_table_files);
 
   void OnIndexPicasaAlbumsContents(
       const picasa::AlbumUIDSet& album_uids,
       const std::vector<picasa::FolderINIContents>& folders_inis);
 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 
   UtilityHandler utility_handler_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionsHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_UTILITY_EXTENSIONS_EXTENSIONS_HANDLER_H_