Fix memory leak on Chromium OS Heapcheck and Chromium OS (valgrind)

ash/desktop_background/desktop_background_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/desktop_background/desktop_background_view.h"
 
 #include <limits>
 
 #include "ash/ash_export.h"
 #include "ash/desktop_background/desktop_background_controller.h"
@@ skipping 33 matching lines @@
  private:
   // Overridden from ui::ImplicitAnimationObserver:
   virtual void OnImplicitAnimationsCompleted() OVERRIDE {
     ash::Shell* shell = ash::Shell::GetInstance();
     shell->user_wallpaper_delegate()->OnWallpaperAnimationFinished();
     // Only removes old component when wallpaper animation finished. If we
     // remove the old one too early, there will be a white flash during
     // animation.
     if (root_window_->GetProperty(kComponentWrapper)) {
       internal::DesktopBackgroundWidgetController* component =
-          root_window_->GetProperty(kComponentWrapper)->component();
+          root_window_->GetProperty(kComponentWrapper)->GetComponent(true);
       root_window_->SetProperty(kWindowDesktopComponent, component);
     }
 
     MessageLoop::current()->DeleteSoon(FROM_HERE, this);
   }
 
   aura::RootWindow* root_window_;
   int container_id_;
   views::Widget* desktop_widget_;
 
@@ skipping 115 matching lines @@
   settings.AddObserver(new ShowWallpaperAnimationObserver(root_window,
                                                           container_id,
                                                           desktop_widget));
   desktop_widget->Show();
   desktop_widget->GetNativeView()->SetName("DesktopBackgroundView");
   return desktop_widget;
 }
 
 }  // namespace internal
 }  // namespace ash