Use IOSImageDataFetcherWrapper for favicon

components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h

Index: components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h
diff --git a/components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h b/components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h
index 81b5f70dbdfccfb4c9b31f2289a0bb31ca6eae3c..fa7a96aaaabf8625223cb076271edbf2ece85946 100644
--- a/components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h
+++ b/components/image_fetcher/ios/ios_image_data_fetcher_wrapper.h
@@ -24,7 +24,8 @@ class GURL;
 namespace image_fetcher {
 
 // Callback that informs of the download of an image encoded in |data|.

[gambard, 2017/02/06 12:21:46]

Update comment for response_code.

[gambard, 2017/02/06 15:58:28]

Done.

-using IOSImageDataFetcherCallback = void (^)(NSData* data);
+using IOSImageDataFetcherCallback = void (^)(const int response_code,
+                                             NSData* data);

[Marc Treib, 2017/02/06 12:35:49]

nit: data first, then response_code? To be consistent with the other callback
types.

[gambard, 2017/02/06 15:58:28]

Done.

 
 class IOSImageDataFetcherWrapper {
  public: