[SuggestionsService] Split SuggestionsService interface from impl

chrome/browser/search/suggestions/suggestions_service_factory.cc

Index: chrome/browser/search/suggestions/suggestions_service_factory.cc
diff --git a/chrome/browser/search/suggestions/suggestions_service_factory.cc b/chrome/browser/search/suggestions/suggestions_service_factory.cc
index 93ce520a0c848ca05a6a5c0ebba3f63e038244ee..7d3358db315f94872f54ec62dbc9dad0976e514b 100644
--- a/chrome/browser/search/suggestions/suggestions_service_factory.cc
+++ b/chrome/browser/search/suggestions/suggestions_service_factory.cc
@@ -92,7 +92,7 @@ KeyedService* SuggestionsServiceFactory::BuildServiceInstanceFor(
   std::unique_ptr<ImageManager> thumbnail_manager(new ImageManager(
       std::move(image_fetcher), std::move(db), database_dir,
       BrowserThread::GetTaskRunnerForThread(BrowserThread::DB)));
-  return new SuggestionsService(
+  return new SuggestionsServiceImpl(
       signin_manager, token_service, sync_service, profile->GetRequestContext(),
       std::move(suggestions_store), std::move(thumbnail_manager),
       std::move(blacklist_store));
@@ -100,7 +100,7 @@ KeyedService* SuggestionsServiceFactory::BuildServiceInstanceFor(
 
 void SuggestionsServiceFactory::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
-  SuggestionsService::RegisterProfilePrefs(registry);
+  SuggestionsServiceImpl::RegisterProfilePrefs(registry);
 }
 
 }  // namespace suggestions