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

chrome/browser/chromeos/login/ui/lock_window.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/ui/lock_window.h"
 
 #include "ash/common/shell_window_ids.h"
 #include "ash/shell.h"
 #include "ui/aura/window.h"
 #include "ui/events/gestures/gesture_recognizer.h"
 
 namespace chromeos {
 
 LockWindow::LockWindow() {
   ui::GestureRecognizer::Get()->CancelActiveTouchesExcept(nullptr);
 
   views::Widget::InitParams params(
       views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
   params.delegate = this;
   params.show_state = ui::SHOW_STATE_FULLSCREEN;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.parent =
       ash::Shell::GetContainer(ash::Shell::GetPrimaryRootWindow(),
                                ash::kShellWindowId_LockScreenContainer);
-  views::Widget::Init(params);
+  Init(params);
   SetVisibilityAnimationTransition(views::Widget::ANIMATE_NONE);
 }
 
 LockWindow::~LockWindow() {}
 
-void LockWindow::Grab() {
-  // We already have grab from the lock screen container, just call the ready
-  // callback immediately.
-  if (observer_)
-    observer_->OnLockWindowReady();
-}
-
 views::Widget* LockWindow::GetWidget() {
   return this;
 }
 
 const views::Widget* LockWindow::GetWidget() const {
   return this;
 }
 
 views::View* LockWindow::GetInitiallyFocusedView() {
   return initially_focused_view_;
 }
 
 }  // namespace chromeos