iOS factories for SigninManager and GaiaCookieManagerService

ios/public/test/test_keyed_service_provider.cc

Index: ios/public/test/test_keyed_service_provider.cc
diff --git a/ios/public/test/test_keyed_service_provider.cc b/ios/public/test/test_keyed_service_provider.cc
index aba59527762ca0e2c8b2295ed7df24d737954510..fb55787ae58382d726c459cd75916950b1e528eb 100644
--- a/ios/public/test/test_keyed_service_provider.cc
+++ b/ios/public/test/test_keyed_service_provider.cc
@@ -82,15 +82,6 @@ TestKeyedServiceProvider::GetBookmarkModelForBrowserState(
   return nullptr;
 }
 
-KeyedServiceBaseFactory* TestKeyedServiceProvider::GetSigninManagerFactory() {
-  return MissingServiceKeyedServiceFactory::GetInstance();
-}
-
-SigninManager* TestKeyedServiceProvider::GetSigninManagerForBrowserState(
-    ChromeBrowserState* browser_state) {
-  return nullptr;
-}
-
 KeyedServiceBaseFactory* TestKeyedServiceProvider::GetSyncServiceFactory() {
   return FakeSyncServiceFactory::GetInstance();
 }