ChromeOS login webui refactoring : Simplify login methods.

chrome/browser/chromeos/login/existing_user_controller_browsertest.cc

Index: chrome/browser/chromeos/login/existing_user_controller_browsertest.cc
diff --git a/chrome/browser/chromeos/login/existing_user_controller_browsertest.cc b/chrome/browser/chromeos/login/existing_user_controller_browsertest.cc
index 49f9ea2f332a4442c7b380d28c7590ee4a9a2b64..f96c316368797ca45c15c965894245fedcce059e 100644
--- a/chrome/browser/chromeos/login/existing_user_controller_browsertest.cc
+++ b/chrome/browser/chromeos/login/existing_user_controller_browsertest.cc
@@ -258,7 +258,7 @@ IN_PROC_BROWSER_TEST_F(ExistingUserControllerTest, ExistingUserLogin) {
   EXPECT_CALL(*mock_user_manager_, IsCurrentUserNew())
       .Times(AnyNumber())
       .WillRepeatedly(Return(false));
-  existing_user_controller()->Login(user_context);
+  existing_user_controller()->Login(user_context, SigninSpecifics());
   content::RunAllPendingInMessageLoop();
 }
 
@@ -577,7 +577,7 @@ IN_PROC_BROWSER_TEST_F(ExistingUserControllerPublicSessionTest,
   ASSERT_TRUE(auto_login_timer());
 
   // Log in and check that it stopped the timer.
-  existing_user_controller()->Login(user_context);
+  existing_user_controller()->Login(user_context, SigninSpecifics());
   EXPECT_TRUE(is_login_in_progress());
   ASSERT_TRUE(auto_login_timer());
   EXPECT_FALSE(auto_login_timer()->IsRunning());