Added login screen mode for adding users into session.

chrome/browser/chromeos/login/mock_login_display_host.h

Index: chrome/browser/chromeos/login/mock_login_display_host.h
diff --git a/chrome/browser/chromeos/login/mock_login_display_host.h b/chrome/browser/chromeos/login/mock_login_display_host.h
index 7cd5839c04dc7c394d906b609e1497b33a2661b9..3d2a574a64dd8e454059b31beafa2408d593d8cb 100644
--- a/chrome/browser/chromeos/login/mock_login_display_host.h
+++ b/chrome/browser/chromeos/login/mock_login_display_host.h
@@ -22,7 +22,7 @@ class MockLoginDisplayHost : public LoginDisplayHost {
   MOCK_CONST_METHOD0(GetWebUILoginView, WebUILoginView*(void));
   MOCK_CONST_METHOD0(GetWidget, views::Widget*(void));
   MOCK_METHOD0(BeforeSessionStart, void(void));
-  MOCK_METHOD0(OnSessionStart, void(void));
+  MOCK_METHOD0(Finalize, void(void));
   MOCK_METHOD0(OnCompleteLogin, void(void));
   MOCK_METHOD0(OpenProxySettings, void(void));
   MOCK_METHOD1(SetOobeProgressBarVisible, void(bool));
@@ -37,6 +37,7 @@ class MockLoginDisplayHost : public LoginDisplayHost {
   virtual void StartWizard(const std::string& name,
                            scoped_ptr<base::DictionaryValue> value) OVERRIDE;
   MOCK_METHOD0(GetWizardController, WizardController*(void));
+  MOCK_METHOD1(StartUserAdding, void(const base::Closure&));
   MOCK_METHOD0(StartSignInScreen, void(void));
   MOCK_METHOD0(ResumeSignInScreen, void(void));
   MOCK_METHOD0(OnPreferencesChanged, void(void));