Large wallpaper decoding in utility process

chrome/common/chrome_utility_messages.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.
 
 // Multiply-included message file, so no include guard.
 
 #if defined(OS_WIN)
 #include <Windows.h>
 #endif  // defined(OS_WIN)
 
@@ skipping 47 matching lines @@
 //------------------------------------------------------------------------------
 // Utility process messages:
 // These are messages from the browser to the utility process.
 
 // Tell the utility process to parse the given JSON data and verify its
 // validity.
 IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_UnpackWebResource,
                      std::string /* JSON data */)
 
 // Tell the utility process to decode the given image data.
-IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_DecodeImage,
-                     std::vector<unsigned char>)  // encoded image contents
+IPC_MESSAGE_CONTROL2(ChromeUtilityMsg_DecodeImage,
+                     std::vector<unsigned char> /* encoded image contents */,
+                     bool /* shrink image if needed for IPC msg limit */)
 
 // Tell the utility process to decode the given JPEG image data with a robust
 // libjpeg codec.
 IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_RobustJPEGDecodeImage,
                      std::vector<unsigned char>)  // encoded image contents
 
 // Tell the utility process to patch the given |input_file| using |patch_file|
 // and place the output in |output_file|. The patch should use the bsdiff
 // algorithm (Courgette's version).
 IPC_MESSAGE_CONTROL3(ChromeUtilityMsg_PatchFileBsdiff,
@@ skipping 97 matching lines @@
 #if defined(OS_WIN)
 IPC_MESSAGE_CONTROL0(ChromeUtilityHostMsg_GetOpenFileName_Failed)
 IPC_MESSAGE_CONTROL2(ChromeUtilityHostMsg_GetOpenFileName_Result,
                      base::FilePath /* directory */,
                      std::vector<base::FilePath> /* filenames */)
 IPC_MESSAGE_CONTROL0(ChromeUtilityHostMsg_GetSaveFileName_Failed)
 IPC_MESSAGE_CONTROL2(ChromeUtilityHostMsg_GetSaveFileName_Result,
                      base::FilePath /* path */,
                      int /* one_based_filter_index  */)
 #endif  // defined(OS_WIN)