[Image Fetcher] Add support to disable cookies

components/ntp_tiles/icon_cacher_impl_unittest.cc

Index: components/ntp_tiles/icon_cacher_impl_unittest.cc
diff --git a/components/ntp_tiles/icon_cacher_impl_unittest.cc b/components/ntp_tiles/icon_cacher_impl_unittest.cc
index e37174229f5a03bbc0d4f5a02048e968b491272c..790630c7586f5fd8b1c270db63e7d5643cb00eaa 100644
--- a/components/ntp_tiles/icon_cacher_impl_unittest.cc
+++ b/components/ntp_tiles/icon_cacher_impl_unittest.cc
@@ -49,6 +49,7 @@ class MockImageFetcher : public image_fetcher::ImageFetcher {
                     base::Callback<void(const std::string& id,
                                         const gfx::Image& image)> callback));
   MOCK_METHOD1(SetDesiredImageFrameSize, void(const gfx::Size&));
+  MOCK_METHOD0(DisableCookies, void());
   MOCK_METHOD0(GetImageDecoder, image_fetcher::ImageDecoder*());
 };