ChromeOS login webui refactoring : Simplify login methods.

chrome/browser/chromeos/login/app_launch_signin_screen.h

Index: chrome/browser/chromeos/login/app_launch_signin_screen.h
diff --git a/chrome/browser/chromeos/login/app_launch_signin_screen.h b/chrome/browser/chromeos/login/app_launch_signin_screen.h
index 456676d9140fa6ab6795d7925feb86bc0d361d66..5f9ecd939e4b90d005f275abcf05b2e862215fbc 100644
--- a/chrome/browser/chromeos/login/app_launch_signin_screen.h
+++ b/chrome/browser/chromeos/login/app_launch_signin_screen.h
@@ -55,11 +55,9 @@ class AppLaunchSigninScreen
   virtual void CancelUserAdding() OVERRIDE;
   virtual void CreateAccount() OVERRIDE;
   virtual void CompleteLogin(const UserContext& user_context) OVERRIDE;
-  virtual void Login(const UserContext& user_context) OVERRIDE;
-  virtual void LoginAsRetailModeUser() OVERRIDE;
-  virtual void LoginAsGuest() OVERRIDE;
+  virtual void Login(const UserContext& user_context,
+                     const SigninSpecifics& specifics) OVERRIDE;
   virtual void MigrateUserData(const std::string& old_password) OVERRIDE;
-  virtual void LoginAsPublicAccount(const std::string& username) OVERRIDE;
   virtual void LoadWallpaper(const std::string& username) OVERRIDE;
   virtual void LoadSigninWallpaper() OVERRIDE;
   virtual void OnSigninScreenReady() OVERRIDE;
@@ -80,8 +78,6 @@ class AppLaunchSigninScreen
   virtual bool IsUserSigninCompleted() const OVERRIDE;
   virtual void SetDisplayEmail(const std::string& email) OVERRIDE;
   virtual void Signout() OVERRIDE;
-  virtual void LoginAsKioskApp(const std::string& app_id,
-                               bool diagnostic_mode) OVERRIDE;
   virtual void HandleGetUsers() OVERRIDE;
   virtual void SetAuthType(
       const std::string& username,