Set desired_image_size when decoding images for NTP Tile icons.

components/image_fetcher/image_fetcher_impl.h

Index: components/image_fetcher/image_fetcher_impl.h
diff --git a/components/image_fetcher/image_fetcher_impl.h b/components/image_fetcher/image_fetcher_impl.h
index 8c92d91705ffed0be6f836e8577cc2d3cfd59ed0..7835e2ddca5819f8b97f3d83a32b0c9cc8c37171 100644
--- a/components/image_fetcher/image_fetcher_impl.h
+++ b/components/image_fetcher/image_fetcher_impl.h
@@ -16,6 +16,7 @@
 #include "components/image_fetcher/image_data_fetcher.h"
 #include "components/image_fetcher/image_decoder.h"
 #include "components/image_fetcher/image_fetcher.h"
+#include "ui/gfx/geometry/size.h"
 #include "url/gurl.h"
 
 namespace gfx {
@@ -44,6 +45,9 @@ class ImageFetcherImpl : public image_fetcher::ImageFetcher {
   // Sets a service name against which to track data usage.
   void SetDataUseServiceName(DataUseServiceName data_use_service_name) override;
 
+  // Sets the desired size for images with multiple frames (like .ico files).
+  void SetDesiredImageFrameSize(const gfx::Size& size) override;
+
   void StartOrQueueNetworkRequest(
       const std::string& id,
       const GURL& image_url,
@@ -83,9 +87,10 @@ class ImageFetcherImpl : public image_fetcher::ImageFetcher {
   // creating callbacks that are passed to the ImageDecoder.
   void OnImageDecoded(const GURL& image_url, const gfx::Image& image);
 
-
   ImageFetcherDelegate* delegate_;
 
+  gfx::Size desired_image_frame_size_;
+
   scoped_refptr<net::URLRequestContextGetter> url_request_context_;
 
   std::unique_ptr<ImageDecoder> image_decoder_;