Initialize blink only when needed in utility processes.

chrome/utility/chrome_content_utility_client.cc

 // 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.
 
 #include "chrome/utility/chrome_content_utility_client.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
@@ skipping 273 matching lines @@
     Send(new ChromeUtilityHostMsg_DecodeImage_Succeeded(decoded_image,
                                                         request_id));
   }
   ReleaseProcessIfNeeded();
 }
 
 void ChromeContentUtilityClient::OnDecodeImage(
     const std::vector<unsigned char>& encoded_data,
     bool shrink_to_fit,
     int request_id) {
+  content::UtilityThread::Get()->EnsureBlinkInitialized();
   DecodeImageAndSend(encoded_data, shrink_to_fit, request_id);
 }
 
 #if defined(OS_CHROMEOS)
 void ChromeContentUtilityClient::OnCreateZipFile(
     const base::FilePath& src_dir,
     const std::vector<base::FilePath>& src_relative_paths,
     const base::FileDescriptor& dest_fd) {
   // dest_fd should be closed in the function. See ipc/ipc_message_util.h for
   // details.
@@ skipping 100 matching lines @@
     const std::string& mime_type, int64 total_size, bool get_attached_images) {
   // Only one IPCDataSource may be created and added to the list of handlers.
   metadata::IPCDataSource* source = new metadata::IPCDataSource(total_size);
   handlers_.push_back(source);
 
   metadata::MediaMetadataParser* parser = new metadata::MediaMetadataParser(
       source, mime_type, get_attached_images);
   parser->Start(base::Bind(&FinishParseMediaMetadata, base::Owned(parser)));
 }
 #endif