components/image_fetcher: Expose RequestMetadata from ImageFetcher

components/ntp_snippets/remote/remote_suggestions_provider_impl.cc

 // Copyright 2015 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/ntp_snippets/remote/remote_suggestions_provider_impl.h"
 
 #include <algorithm>
 #include <iterator>
 #include <utility>
 
@@ skipping 176 matching lines @@
     const std::string& image_data) {
   if (image_data.empty()) {
     return;
   }
   database_->SaveImage(id_within_category, image_data);
 }
 
 void CachedImageFetcher::OnImageDecodingDone(
     const ImageFetchedCallback& callback,
     const std::string& id_within_category,
-    const gfx::Image& image) {
+    const gfx::Image& image,
+    const image_fetcher::RequestMetadata& metadata) {
   callback.Run(image);
 }
 
 void CachedImageFetcher::OnImageFetchedFromDatabase(
     const ImageFetchedCallback& callback,
     const ContentSuggestion::ID& suggestion_id,
     const GURL& url,
     std::string data) {  // SnippetImageCallback requires by-value.
   // The image decoder is null in tests.
   if (image_fetcher_->GetImageDecoder() && !data.empty()) {
@@ skipping 1062 matching lines @@
 RemoteSuggestionsProviderImpl::CategoryContent::CategoryContent(
     CategoryContent&&) = default;
 
 RemoteSuggestionsProviderImpl::CategoryContent::~CategoryContent() = default;
 
 RemoteSuggestionsProviderImpl::CategoryContent&
 RemoteSuggestionsProviderImpl::CategoryContent::operator=(CategoryContent&&) =
     default;
 
 }  // namespace ntp_snippets