Convert utility process extension ParseUpdate IPC to mojo

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"
-#include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/media_galleries/picasa_types.h"
 #include "chrome/utility/utility_message_handler.h"
 #include "extensions/features/features.h"
 #include "extensions/utility/utility_handler.h"
 
 #if !BUILDFLAG(ENABLE_EXTENSIONS)
 #error "Extensions must be enabled"
 #endif
 
 namespace service_manager {
 class InterfaceRegistry;
 }
 
 namespace extensions {
 
-// Dispatches IPCs for Chrome extensions utility messages.
+// IPC handler for chrome extensions utility messages.
+// Note: these IPC are deprecated so there is no need to convert
+// them to mojo. https://crbug.com/680928
 class ExtensionsHandler : public UtilityMessageHandler {
  public:
   ExtensionsHandler();
   ~ExtensionsHandler() override;
 
   static void PreSandboxStartup();
 
-  // TODO(noel): consider moving this API to the UtilityMessageHandler
-  // interface.
   static void ExposeInterfacesToBrowser(
       service_manager::InterfaceRegistry* registry,
       bool running_elevated);
 
   // UtilityMessageHandler:
   bool OnMessageReceived(const IPC::Message& message) override;
 
  private:
-  // IPC message handlers.
 #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_