Make image_decoder a Leaky LazyInstance

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 1d244197b55103bf0a95ed9f1dfd4691b7232d0d..503d684d1baf841c4a4170e94703237b19f7d3c1 100644
--- a/chrome/utility/chrome_content_utility_client.h
+++ b/chrome/utility/chrome_content_utility_client.h
@@ -36,7 +36,7 @@ class ChromeContentUtilityClient : public content::ContentUtilityClient {
   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;
@@ -46,9 +46,9 @@ class ChromeContentUtilityClient : public content::ContentUtilityClient {
   // 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,