Set desired_image_size when decoding images for NTP Tile icons.

chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc

Index: chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
diff --git a/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc b/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
index 0b801533b28271fd402014b5e93fabfef01efb79..15049be12720ccc91763f39123355ee50b99159c 100644
--- a/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
+++ b/chrome/browser/chromeos/hats/hats_notification_controller_unittest.cc
@@ -75,6 +75,7 @@ class MockImageFetcher : public image_fetcher::ImageFetcher {
            base::Callback<void(const std::string&, const gfx::Image&)>));
   MOCK_METHOD1(SetImageFetcherDelegate, void(ImageFetcherDelegate*));
   MOCK_METHOD1(SetDataUseServiceName, void(DataUseServiceName));
+  MOCK_METHOD1(SetDesiredImageFrameSize, void(const gfx::Size&));
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockImageFetcher);