Promotes more accessors from WmShell to Shell

ash/common/wallpaper/wallpaper_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/wallpaper/wallpaper_view.h"
 
 #include "ash/common/session/session_controller.h"
 #include "ash/common/wallpaper/wallpaper_controller.h"
 #include "ash/common/wallpaper/wallpaper_delegate.h"
 #include "ash/common/wallpaper/wallpaper_widget_controller.h"
@@ skipping 67 matching lines @@
 class PreEventDispatchHandler : public ui::EventHandler {
  public:
   PreEventDispatchHandler() {}
   ~PreEventDispatchHandler() override {}
 
  private:
   // ui::EventHandler:
   void OnMouseEvent(ui::MouseEvent* event) override {
     CHECK_EQ(ui::EP_PRETARGET, event->phase());
     WindowSelectorController* controller =
-        WmShell::Get()->window_selector_controller();
+        Shell::Get()->window_selector_controller();
     if (event->type() == ui::ET_MOUSE_RELEASED && controller->IsSelecting()) {
       controller->ToggleOverview();
       event->StopPropagation();
     }
   }
 
   void OnGestureEvent(ui::GestureEvent* event) override {
     CHECK_EQ(ui::EP_PRETARGET, event->phase());
     WindowSelectorController* controller =
-        WmShell::Get()->window_selector_controller();
+        Shell::Get()->window_selector_controller();
     if (event->type() == ui::ET_GESTURE_TAP && controller->IsSelecting()) {
       controller->ToggleOverview();
       event->StopPropagation();
     }
   }
 
   DISALLOW_COPY_AND_ASSIGN(PreEventDispatchHandler);
 };
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 124 matching lines @@
     // Disable animation if transition to login screen from an empty background.
     wallpaper_window->SetVisibilityAnimationTransition(::wm::ANIMATE_NONE);
   }
 
   WmWindow* container = root_window->GetChildByShellWindowId(container_id);
   wallpaper_widget->SetBounds(container->GetBounds());
   return wallpaper_widget;
 }
 
 }  // namespace ash