Extend FaviconService to support fetching favicons from a Google server

components/favicon/core/large_icon_service_unittest.cc

Index: components/favicon/core/large_icon_service_unittest.cc
diff --git a/components/favicon/core/large_icon_service_unittest.cc b/components/favicon/core/large_icon_service_unittest.cc
index e3bc5f9c5607166ac290dbe40bf4dcfc75f9bbcb..409b0df187627e6a48ba39d914bf2ebd37e38846 100644
--- a/components/favicon/core/large_icon_service_unittest.cc
+++ b/components/favicon/core/large_icon_service_unittest.cc
@@ -18,6 +18,7 @@
 #include "components/favicon/core/favicon_service.h"
 #include "components/favicon_base/fallback_icon_style.h"
 #include "components/favicon_base/favicon_types.h"
+#include "components/image_fetcher/image_fetcher.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ -57,7 +58,7 @@ favicon_base::FaviconRawBitmapResult CreateTestBitmap(
 // A mock FaviconService that emits pre-programmed response.
 class MockFaviconService : public FaviconService {
  public:
-  MockFaviconService() : FaviconService(nullptr, nullptr) {
+  MockFaviconService() : FaviconService(nullptr, nullptr, nullptr) {
   }
 
   ~MockFaviconService() override {