Add |SetImageDownloadLimit| to ImageFetcher to limit downloaded bytes

components/ntp_snippets/remote/remote_suggestions_provider_impl_unittest.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 <memory>
 #include <utility>
 #include <vector>
 
@@ skipping 333 matching lines @@
     return base::MakeUnique<net::FakeURLFetcher>(
         url, d, /*response_data=*/std::string(), net::HTTP_NOT_FOUND,
         net::URLRequestStatus::FAILED);
   }
 };
 
 class MockImageFetcher : public ImageFetcher {
  public:
   MOCK_METHOD1(SetImageFetcherDelegate, void(ImageFetcherDelegate*));
   MOCK_METHOD1(SetDataUseServiceName, void(DataUseServiceName));
+  MOCK_METHOD1(SetImageDownloadLimit,
+               void(const base::Optional<int64_t>& max_download_bytes));
   MOCK_METHOD1(SetDesiredImageFrameSize, void(const gfx::Size&));
   MOCK_METHOD3(StartOrQueueNetworkRequest,
                void(const std::string&,
                     const GURL&,
                     const ImageFetcherCallback&));
   MOCK_METHOD0(GetImageDecoder, image_fetcher::ImageDecoder*());
 };
 
 class FakeImageDecoder : public image_fetcher::ImageDecoder {
  public:
@@ skipping 1452 matching lines @@
   EXPECT_CALL(scheduler, OnProviderActivated());
   // The scheduler should be notified of clearing the history.
   EXPECT_CALL(scheduler, OnSuggestionsCleared());
 
   service->SetRemoteSuggestionsScheduler(&scheduler);
   service->OnStatusChanged(RemoteSuggestionsStatus::ENABLED_AND_SIGNED_OUT,
                            RemoteSuggestionsStatus::ENABLED_AND_SIGNED_IN);
 }
 
 }  // namespace ntp_snippets