mash: Migrate SessionStateDelegate access to WmShell.

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/common/session/session_state_delegate.h"
 #include "ash/common/shell_window_ids.h"
+#include "ash/common/wm_shell.h"
 #include "ash/shell.h"
 #include "ash/shell/example_factory.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/text_utils.h"
 #include "ui/views/controls/button/label_button.h"
 #include "ui/views/corewm/tooltip_controller.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/widget/widget_delegate.h"
 
-using ash::Shell;
-
 namespace ash {
 namespace shell {
 
 class LockView : public views::WidgetDelegateView,
                  public views::ButtonListener {
  public:
   LockView()
       : unlock_button_(
             new views::LabelButton(this, base::ASCIIToUTF16("Unlock"))) {
     unlock_button_->SetStyle(views::Button::STYLE_BUTTON);
@@ skipping 24 matching lines @@
     unlock_button_->SetBoundsRect(bounds);
   }
   void ViewHierarchyChanged(
       const ViewHierarchyChangedDetails& details) override {
     if (details.is_add && details.child == this)
       unlock_button_->RequestFocus();
   }
 
   // Overridden from views::WidgetDelegateView:
   void WindowClosing() override {
-    Shell::GetInstance()->session_state_delegate()->UnlockScreen();
+    WmShell::Get()->GetSessionStateDelegate()->UnlockScreen();
   }
 
   // Overridden from views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override {
     DCHECK(sender == unlock_button_);
     GetWidget()->Close();
   }
 
   gfx::FontList font_list_;
   views::LabelButton* unlock_button_;
@@ skipping 21 matching lines @@
   widget->GetNativeView()->SetName("LockView");
   widget->GetNativeView()->Focus();
 
   // TODO: it shouldn't be necessary to invoke UpdateTooltip() here.
   Shell::GetInstance()->tooltip_controller()->UpdateTooltip(
       widget->GetNativeView());
 }
 
 }  // namespace shell
 }  // namespace ash