Rename GetRootWindow() -> GetPrimaryRootWindow()

ash/shell/lock_view.cc

 // Copyright (c) 2012 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 "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/shell/example_factory.h"
 #include "ash/tooltips/tooltip_controller.h"
 #include "base/utf_string_conversions.h"
@@ skipping 68 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(LockView);
 };
 
 void CreateLockScreen() {
   LockView* lock_view = new LockView;
   views::Widget* widget = new views::Widget;
   views::Widget::InitParams params(
       views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
   gfx::Size ps = lock_view->GetPreferredSize();
 
-  gfx::Size root_window_size = Shell::GetRootWindow()->bounds().size();
+  gfx::Size root_window_size = Shell::GetPrimaryRootWindow()->bounds().size();
   params.bounds = gfx::Rect((root_window_size.width() - ps.width()) / 2,
                             (root_window_size.height() - ps.height()) / 2,
                             ps.width(), ps.height());
   params.delegate = lock_view;
   params.parent =
       Shell::GetInstance()->GetContainer(
           ash::internal::kShellWindowId_LockScreenContainer);
   widget->Init(params);
   widget->SetContentsView(lock_view);
   widget->Show();
   widget->GetNativeView()->SetName("LockView");
   widget->GetNativeView()->Focus();
 
   Shell::GetInstance()->tooltip_controller()->UpdateTooltip(
       widget->GetNativeView());
 }
 
 }  // namespace shell
 }  // namespace ash