Enable user change background image in settings page in Aura build.

ash/shell.h

 // 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.
 
 #ifndef ASH_SHELL_H_
 #define ASH_SHELL_H_
 #pragma once
 
 #include <utility>
 #include <vector>
@@ skipping 31 matching lines @@
 class BrightnessController;
 class Launcher;
 class NestedDispatcherController;
 class PowerButtonController;
 class PowerStatusController;
 class ShellDelegate;
 class SystemTrayDelegate;
 class SystemTray;
 class VideoDetector;
 class WindowCycleController;
+class DesktopBackgroundController;

[flackr, 2012/03/05 16:16:03]

nit: Sort.

[bshe, 2012/03/06 01:33:27]

Done.

 
 namespace internal {
 class ActivationController;
 class AcceleratorFilter;
 class AppList;
 class DragDropController;
 class FocusCycler;
 class InputMethodEventFilter;
 class PartialScreenshotEventFilter;
 class RootWindowEventFilter;
@@ skipping 115 matching lines @@
 
   internal::RootWindowEventFilter* root_filter() {
     return root_filter_;
   }
   internal::TooltipController* tooltip_controller() {
     return tooltip_controller_.get();
   }
   internal::PartialScreenshotEventFilter* partial_screenshot_filter() {
     return partial_screenshot_filter_.get();
   }
+  DesktopBackgroundController* desktop_background_controller() {
+    return desktop_background_controller_.get();
+  }
   PowerButtonController* power_button_controller() {
     return power_button_controller_.get();
   }
   VideoDetector* video_detector() {
     return video_detector_.get();
   }
   WindowCycleController* window_cycle_controller() {
     return window_cycle_controller_.get();
   }
   AudioController* audio_controller() const {
@@ skipping 85 matching lines @@
   scoped_ptr<internal::AppList> app_list_;
 
   scoped_ptr<internal::StackingController> stacking_controller_;
   scoped_ptr<internal::ActivationController> activation_controller_;
   scoped_ptr<internal::WindowModalityController> window_modality_controller_;
   scoped_ptr<internal::DragDropController> drag_drop_controller_;
   scoped_ptr<internal::WorkspaceController> workspace_controller_;
   scoped_ptr<internal::ShadowController> shadow_controller_;
   scoped_ptr<internal::TooltipController> tooltip_controller_;
   scoped_ptr<internal::VisibilityController> visibility_controller_;
+  scoped_ptr<DesktopBackgroundController> desktop_background_controller_;
   scoped_ptr<PowerButtonController> power_button_controller_;
   scoped_ptr<VideoDetector> video_detector_;
   scoped_ptr<WindowCycleController> window_cycle_controller_;
   scoped_ptr<internal::FocusCycler> focus_cycler_;
 
   // These controllers are not owned by the shell.
   AudioController* audio_controller_;
   BrightnessController* brightness_controller_;
   PowerStatusController* power_status_controller_;
 
@@ skipping 33 matching lines @@
   // Offset between the corner of the status area and the corner of the screen
   // when in the compact window mode.
   gfx::Size compact_status_area_offset_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_