Make image_decoder a Leaky LazyInstance

chrome/utility/chrome_content_utility_client.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.
 
 #ifndef CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_
 #define CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_
 
 #include <set>
 #include <string>
 #include <vector>
@@ skipping 17 matching lines @@
 
   void UtilityThreadStarted() override;
   bool OnMessageReceived(const IPC::Message& message) override;
 
   static void PreSandboxStartup();
 
   // Shared with extensions::ExtensionsHandler.
   static SkBitmap DecodeImage(const std::vector<unsigned char>& encoded_data,
                               bool shrink_to_fit);
   static void DecodeImageAndSend(const std::vector<unsigned char>& encoded_data,
-                                 bool shrink_to_fit);
+                                 bool shrink_to_fit, int id);
 
   static void set_max_ipc_message_size_for_test(int64_t max_message_size) {
     max_ipc_message_size_ = max_message_size;
   }
 
  private:
   // IPC message handlers.
   void OnUnpackWebResource(const std::string& resource_data);
   void OnDecodeImage(const std::vector<unsigned char>& encoded_data,
-                     bool shrink_to_fit);
+                     bool shrink_to_fit, int id);
   void OnRobustJPEGDecodeImage(
-      const std::vector<unsigned char>& encoded_data);
+      const std::vector<unsigned char>& encoded_data, int id);
 
 #if defined(OS_CHROMEOS)
   void OnCreateZipFile(const base::FilePath& src_dir,
                        const std::vector<base::FilePath>& src_relative_paths,
                        const base::FileDescriptor& dest_fd);
 #endif  // defined(OS_CHROMEOS)
 
   void OnParseJSON(const std::string& json);
   void OnPatchFileBsdiff(const base::FilePath& input_file,
                          const base::FilePath& patch_file,
@@ skipping 19 matching lines @@
   bool filter_messages_;
   // A list of message_ids to filter.
   std::set<int> message_id_whitelist_;
   // Maximum IPC msg size (default to kMaximumMessageSize; override for testing)
   static int64_t max_ipc_message_size_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentUtilityClient);
 };
 
 #endif  // CHROME_UTILITY_CHROME_CONTENT_UTILITY_CLIENT_H_