Extend LargeIconService to fetch missing favicons from a Google server

chrome/browser/favicon/large_icon_service_factory.cc

Index: chrome/browser/favicon/large_icon_service_factory.cc
diff --git a/chrome/browser/favicon/large_icon_service_factory.cc b/chrome/browser/favicon/large_icon_service_factory.cc
index 2272b2c05cfa46b010df2b87114c19d3cac0b261..318ea149354da3a5b14bddac47970216043c56af 100644
--- a/chrome/browser/favicon/large_icon_service_factory.cc
+++ b/chrome/browser/favicon/large_icon_service_factory.cc
@@ -9,8 +9,11 @@
 #include "chrome/browser/favicon/favicon_service_factory.h"
 #include "chrome/browser/profiles/incognito_helpers.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/search/suggestions/image_decoder_impl.h"
 #include "components/favicon/core/favicon_service.h"
 #include "components/favicon/core/large_icon_service.h"
+#include "components/image_fetcher/core/image_decoder.h"
+#include "components/image_fetcher/core/image_fetcher_impl.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
@@ -43,13 +46,18 @@ content::BrowserContext* LargeIconServiceFactory::GetBrowserContextToUse(
 
 KeyedService* LargeIconServiceFactory::BuildServiceInstanceFor(
     content::BrowserContext* context) const {
+  Profile* profile = Profile::FromBrowserContext(context);
   favicon::FaviconService* favicon_service =
-      FaviconServiceFactory::GetForProfile(Profile::FromBrowserContext(context),
+      FaviconServiceFactory::GetForProfile(profile,
                                            ServiceAccessType::EXPLICIT_ACCESS);
   return new favicon::LargeIconService(
-      favicon_service, content::BrowserThread::GetBlockingPool()
-                           ->GetTaskRunnerWithShutdownBehavior(
-                               base::SequencedWorkerPool::SKIP_ON_SHUTDOWN));
+      favicon_service,
+      content::BrowserThread::GetBlockingPool()
+          ->GetTaskRunnerWithShutdownBehavior(
+              base::SequencedWorkerPool::SKIP_ON_SHUTDOWN),
+      base::MakeUnique<image_fetcher::ImageFetcherImpl>(
+          base::MakeUnique<suggestions::ImageDecoderImpl>(),
+          profile->GetRequestContext()));
 }
 
 bool LargeIconServiceFactory::ServiceIsNULLWhileTesting() const {