Use IOSImageDataFetcherWrapper for favicon

components/image_fetcher/image_fetcher_impl.cc

 // Copyright 2014 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 "components/image_fetcher/image_fetcher_impl.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "net/base/load_flags.h"
@@ skipping 45 matching lines @@
         image_url,
         base::Bind(&ImageFetcherImpl::OnImageURLFetched,
                    base::Unretained(this), image_url));
   } else {
     // Request in progress. Register as an interested callback.
     it->second.callbacks.push_back(callback);
   }
 }
 
 void ImageFetcherImpl::OnImageURLFetched(const GURL& image_url,
-                                         const std::string& image_data) {
+                                         const std::string& image_data,
+                                         int http_response_code) {
   // Inform the ImageFetcherDelegate.
   if (delegate_) {
     auto it = pending_net_requests_.find(image_url);
     DCHECK(it != pending_net_requests_.end());
     delegate_->OnImageDataFetched(it->second.id, image_data);
   }
 
   image_decoder_->DecodeImage(
       image_data,
       base::Bind(&ImageFetcherImpl::OnImageDecoded,
@@ skipping 15 matching lines @@
   // Inform the ImageFetcherDelegate.
   if (delegate_) {
     delegate_->OnImageFetched(request->id, image);
   }
 
   // Erase the completed ImageRequest.
   pending_net_requests_.erase(image_iter);
 }
 
 }  // namespace image_fetcher