chromeos: Promotes more from WmShell to Shell

ash/common/wallpaper/wallpaper_controller_unittest.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_controller.h"
 
 #include <cmath>
 #include <cstdlib>
 
 #include "ash/common/wallpaper/wallpaper_view.h"
@@ skipping 100 matching lines @@
   void SetUp() override {
     test::AshTestBase::SetUp();
     // Ash shell initialization creates wallpaper. Reset it so we can manually
     // control wallpaper creation and animation in our tests.
     RootWindowController* root_window_controller =
         WmShell::Get()->GetPrimaryRootWindow()->GetRootWindowController();
     root_window_controller->SetWallpaperWidgetController(nullptr);
     root_window_controller->SetAnimatingWallpaperWidgetController(nullptr);
     controller_ = Shell::GetInstance()->wallpaper_controller();
     wallpaper_delegate_ = static_cast<test::TestWallpaperDelegate*>(
-        WmShell::Get()->wallpaper_delegate());
+        Shell::Get()->wallpaper_delegate());
     controller_->set_wallpaper_reload_delay_for_test(0);
   }
 
   WallpaperView* wallpaper_view() {
     WallpaperWidgetController* controller =
         WmShell::Get()
             ->GetPrimaryRootWindow()
             ->GetRootWindowController()
             ->animating_wallpaper_widget_controller()
             ->GetController(false);
@@ skipping 337 matching lines @@
   {
     SCOPED_TRACE(base::StringPrintf("1200x600/u@1.5 low resolution"));
     controller_->SetWallpaperImage(image_low_res, WALLPAPER_LAYOUT_CENTER);
     WallpaperFitToNativeResolution(
         wallpaper_view(), low_dsf, low_resolution.width(),
         low_resolution.height(), kCustomWallpaperColor);
   }
 }
 
 }  // namespace ash