Add |SetImageDownloadLimit| to ImageFetcher to limit downloaded bytes

components/image_fetcher/core/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/core/image_fetcher_impl.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "net/base/load_flags.h"
@@ skipping 25 matching lines @@
 
 void ImageFetcherImpl::SetDataUseServiceName(
     DataUseServiceName data_use_service_name) {
   image_data_fetcher_->SetDataUseServiceName(data_use_service_name);
 }
 
 void ImageFetcherImpl::SetDesiredImageFrameSize(const gfx::Size& size) {
   desired_image_frame_size_ = size;
 }
 
+void ImageFetcherImpl::SetImageDownloadLimit(
+    const base::Optional<int64_t>& max_download_bytes) {
+  image_data_fetcher_->SetImageDownloadLimit(max_download_bytes);
+}
+
 void ImageFetcherImpl::StartOrQueueNetworkRequest(
     const std::string& id,
     const GURL& image_url,
     const ImageFetcherCallback& callback) {
   // Before starting to fetch the image. Look for a request in progress for
   // |image_url|, and queue if appropriate.
   ImageRequestMap::iterator it = pending_net_requests_.find(image_url);
   if (it == pending_net_requests_.end()) {
     ImageRequest request;
     request.id = id;
@@ skipping 45 matching lines @@
 
   // Erase the completed ImageRequest.
   pending_net_requests_.erase(image_iter);
 }
 
 ImageDecoder* ImageFetcherImpl::GetImageDecoder() {
   return image_decoder_.get();
 }
 
 }  // namespace image_fetcher