mash: Port mojo:ash_sysui's ContextMenuMus to mojo:ash.

ash/desktop_background/desktop_background_widget_controller.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/desktop_background/desktop_background_widget_controller.h"
 
 #include "ash/ash_export.h"
+#include "ash/common/wallpaper/wallpaper_delegate.h"
 #include "ash/common/wm_lookup.h"
+#include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
-#include "ash/desktop_background/user_wallpaper_delegate.h"
 #include "ash/root_window_controller.h"
-#include "ash/shell.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/layer_animation_observer.h"
 #include "ui/compositor/scoped_layer_animation_settings.h"
 #include "ui/views/widget/widget.h"
 
 namespace ash {
 namespace {
 
 class ShowWallpaperAnimationObserver : public ui::ImplicitAnimationObserver,
                                        public views::WidgetObserver {
@@ skipping 95 matching lines @@
     const gfx::Rect& new_bounds) {
   SetBounds(new_bounds);
 }
 
 void DesktopBackgroundWidgetController::StartAnimating(
     RootWindowController* root_window_controller) {
   if (widget_) {
     ui::ScopedLayerAnimationSettings settings(
         widget_->GetNativeView()->layer()->GetAnimator());
     settings.AddObserver(new ShowWallpaperAnimationObserver(
-        root_window_controller, widget_, Shell::GetInstance()
-                                             ->user_wallpaper_delegate()
-                                             ->ShouldShowInitialAnimation()));
+        root_window_controller, widget_,
+        WmShell::Get()->wallpaper_delegate()->ShouldShowInitialAnimation()));
     // When |widget_| shows, AnimateShowWindowCommon() is called to do the
     // animation. Sets transition duration to 0 to avoid animating to the
     // show animation's initial values.
     settings.SetTransitionDuration(base::TimeDelta());
     widget_->Show();
   }
 }
 
 AnimatingDesktopController::AnimatingDesktopController(
     DesktopBackgroundWidgetController* component) {
@@ skipping 10 matching lines @@
 }
 
 DesktopBackgroundWidgetController* AnimatingDesktopController::GetController(
     bool pass_ownership) {
   if (pass_ownership)
     return controller_.release();
   return controller_.get();
 }
 
 }  // namespace ash