components/image_fetcher: Expose RequestMetadata from ImageFetcher

components/suggestions/image_manager.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/suggestions/image_manager.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 16 matching lines @@
 std::unique_ptr<SkBitmap> DecodeImage(
     scoped_refptr<base::RefCountedMemory> encoded_data) {
   return suggestions::DecodeJPEGToSkBitmap(encoded_data->front(),
                                            encoded_data->size());
 }
 
 // Wraps an ImageManager callback so that it can be used with the ImageFetcher.
 void WrapCallback(
     const suggestions::ImageManager::ImageCallback& wrapped_callback,
     const std::string& url,
-    const gfx::Image& image) {
+    const gfx::Image& image,
+    const image_fetcher::RequestMetadata& metadata) {
   wrapped_callback.Run(GURL(url), image);
 }
 
 }  // namespace
 
 namespace suggestions {
 
 ImageManager::ImageManager() : weak_ptr_factory_(this) {}
 
 ImageManager::ImageManager(
@@ skipping 205 matching lines @@
        it != pending_cache_requests_.end(); ++it) {
     const ImageCacheRequest& request = it->second;
     for (CallbackVector::const_iterator callback_it = request.callbacks.begin();
          callback_it != request.callbacks.end(); ++callback_it) {
       ServeFromCacheOrNetwork(request.url, request.image_url, *callback_it);
     }
   }
 }
 
 }  // namespace suggestions