Convert the utility process image decoder into a Mojo service.

chrome/utility/chrome_content_utility_client.h

Index: chrome/utility/chrome_content_utility_client.h
diff --git a/chrome/utility/chrome_content_utility_client.h b/chrome/utility/chrome_content_utility_client.h
index 049b1b158d30e4f51b1d52f66468388b99897ada..823c3452782dad64fb3775faaaf771d5b470c24f 100644
--- a/chrome/utility/chrome_content_utility_client.h
+++ b/chrome/utility/chrome_content_utility_client.h
@@ -38,29 +38,10 @@ class ChromeContentUtilityClient : public content::ContentUtilityClient {
 
   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,
-                                 int request_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,
-                     int request_id);
 #if defined(OS_CHROMEOS)
-  void OnRobustJPEGDecodeImage(const std::vector<unsigned char>& encoded_data,
-                               int request_id);
-  void OnRobustPNGDecodeImage(const std::vector<unsigned char>& encoded_data,
-                              int request_id);
-
   void OnCreateZipFile(const base::FilePath& src_dir,
                        const std::vector<base::FilePath>& src_relative_paths,
                        const base::FileDescriptor& dest_fd);
@@ -90,8 +71,6 @@ class ChromeContentUtilityClient : public content::ContentUtilityClient {
   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);
 };