cros: Cleanup lock screen and OOBE C++ backing code.

chrome/browser/chromeos/login/lock/screen_locker_delegate.h

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_DELEGATE_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_DELEGATE_H_
-
-#include "base/callback_forward.h"
-#include "base/macros.h"
-#include "base/strings/string16.h"
-#include "chrome/browser/chromeos/login/help_app_launcher.h"
-#include "chrome/browser/chromeos/login/ui/login_display.h"
-#include "ui/gfx/native_widget_types.h"
-
-class GURL;
-
-namespace content {
-class WebUI;
-}
-
-namespace gfx {
-class Image;
-}
-
-namespace chromeos {
-
-class ScreenLocker;
-
-// ScreenLockerDelegate takes care of displaying the lock screen UI.
-class ScreenLockerDelegate {
- public:
-  explicit ScreenLockerDelegate(ScreenLocker* screen_locker);
-  virtual ~ScreenLockerDelegate();
-
-  // Initialize the screen locker delegate. This will call ScreenLockReady when
-  // done to notify ScreenLocker.
-  virtual void LockScreen() = 0;
-
-  // Inform the screen locker that the screen has been locked
-  virtual void ScreenLockReady();
-
-  // This function is called when ScreenLocker::Authenticate is called to
-  // attempt to authenticate with a given password.
-  virtual void OnAuthenticate() = 0;
-
-  // Enable/disable password input.
-  virtual void SetInputEnabled(bool enabled) = 0;
-
-  // Disables all UI needed and shows error bubble with |message|.
-  // If |sign_out_only| is true then all other input except "Sign Out"
-  // button is blocked.
-  virtual void ShowErrorMessage(
-      int error_msg_id,
-      HelpAppLauncher::HelpTopic help_topic_id) = 0;
-
-  // Close message bubble to clear error messages.
-  virtual void ClearErrors() = 0;
-
-  // Allows to have visual effects once unlock authentication is successful,
-  // Must call ScreenLocker::UnlockOnLoginSuccess() once all effects are done.
-  virtual void AnimateAuthenticationSuccess() = 0;
-
-  // Returns the native window displaying the lock screen.
-  virtual gfx::NativeWindow GetNativeWindow() const = 0;
-
-  // Returns WebUI associated with screen locker implementation or NULL if
-  // there isn't one.
-  virtual content::WebUI* GetAssociatedWebUI();
-
-  // Called when webui lock screen is ready.
-  virtual void OnLockWebUIReady() = 0;
-
-  // Called when webui lock screen wallpaper is loaded and displayed.
-  virtual void OnLockBackgroundDisplayed() = 0;
-
-  // Called when the webui header bar becomes visible.
-  virtual void OnHeaderBarVisible() = 0;
-
-  // Returns screen locker associated with delegate.
-  ScreenLocker* screen_locker() { return screen_locker_; }
-
- protected:
-  // ScreenLocker that owns this delegate.
-  ScreenLocker* screen_locker_;
-
-  DISALLOW_COPY_AND_ASSIGN(ScreenLockerDelegate);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_LOCK_SCREEN_LOCKER_DELEGATE_H_