Make image_decoder a Leaky LazyInstance

chrome/common/extensions/chrome_utility_extensions_messages.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.
 
 // Multiply-included message file, so no include guard.
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 61 matching lines @@
 IPC_STRUCT_TRAITS_END()
 
 //------------------------------------------------------------------------------
 // Utility process messages:
 // These are messages from the browser to the utility process.
 
 IPC_MESSAGE_CONTROL2(ChromeUtilityMsg_UnzipToDir,
                      base::FilePath /* zip_file */,
                      base::FilePath /* dir */)
 
-// Tell the utility process to decode the given image data, which is base64
-// encoded.
-IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_DecodeImageBase64,
-                     std::string)  // base64 encoded image contents
-
 #if defined(OS_WIN)
 // Tell the utility process to parse the iTunes preference XML file contents
 // and return the path to the iTunes directory.
 IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_ParseITunesPrefXml,
                      std::string /* XML to parse */)
 #endif  // defined(OS_WIN)
 
 #if defined(OS_MACOSX)
 // Tell the utility process to parse the iPhoto library XML file and
 // return the parse result as well as the iPhoto library as an iphoto::Library.
@@ skipping 137 matching lines @@
 // elevation).
 IPC_MESSAGE_CONTROL1(ChromeUtilityHostMsg_GetWiFiCredentials,
                      std::string /* ssid */)
 
 // Reply after getting WiFi credentials from the system. |success| is false if
 // error occurred.
 IPC_MESSAGE_CONTROL2(ChromeUtilityHostMsg_GotWiFiCredentials,
                      std::string /* key_data */,
                      bool /* success */)
 #endif  // defined(OS_WIN)