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diff --git a/chromium/ash/desktop_background/desktop_background_controller.h b/chromium/ash/desktop_background/desktop_background_controller.h
deleted file mode 100644
index 4cfbc8ea5df..00000000000
--- a/chromium/ash/desktop_background/desktop_background_controller.h
+++ /dev/null
@@ -1,227 +0,0 @@
-// 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_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_
-#define ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_
-
-#include "ash/ash_export.h"
-#include "ash/display/display_controller.h"
-#include "base/basictypes.h"
-#include "base/files/file_path.h"
-#include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "base/observer_list.h"
-#include "base/timer/timer.h"
-#include "ui/compositor/layer.h"
-#include "ui/gfx/image/image_skia.h"
-
-typedef unsigned int SkColor;
-
-class CommandLine;
-
-namespace aura {
-class Window;
-}
-
-namespace ash {
-
-enum WallpaperLayout {
-  // Center the wallpaper on the desktop without scaling it. The wallpaper
-  // may be cropped.
-  WALLPAPER_LAYOUT_CENTER,
-  // Scale the wallpaper (while preserving its aspect ratio) to cover the
-  // desktop; the wallpaper may be cropped.
-  WALLPAPER_LAYOUT_CENTER_CROPPED,
-  // Scale the wallpaper (without preserving its aspect ratio) to match the
-  // desktop's size.
-  WALLPAPER_LAYOUT_STRETCH,
-  // Tile the wallpaper over the background without scaling it.
-  WALLPAPER_LAYOUT_TILE,
-};
-
-enum WallpaperResolution {
-  WALLPAPER_RESOLUTION_LARGE,
-  WALLPAPER_RESOLUTION_SMALL
-};
-
-const SkColor kLoginWallpaperColor = 0xFEFEFE;
-
-// The width and height of small/large resolution wallpaper. When screen size is
-// smaller than |kSmallWallpaperMaxWidth| and |kSmallWallpaperMaxHeight|, the
-// small resolution wallpaper should be used. Otherwise, uses the large
-// resolution wallpaper.
-ASH_EXPORT extern const int kSmallWallpaperMaxWidth;
-ASH_EXPORT extern const int kSmallWallpaperMaxHeight;
-ASH_EXPORT extern const int kLargeWallpaperMaxWidth;
-ASH_EXPORT extern const int kLargeWallpaperMaxHeight;
-
-// The width and heigh of wallpaper thumbnails.
-ASH_EXPORT extern const int kWallpaperThumbnailWidth;
-ASH_EXPORT extern const int kWallpaperThumbnailHeight;
-
-class DesktopBackgroundControllerObserver;
-class WallpaperResizer;
-
-// Loads selected desktop wallpaper from file system asynchronously and updates
-// background layer if loaded successfully.
-class ASH_EXPORT DesktopBackgroundController
-    : public DisplayController::Observer {
- public:
-  enum BackgroundMode {
-    BACKGROUND_NONE,
-    BACKGROUND_IMAGE,
-  };
-
-  DesktopBackgroundController();
-  virtual ~DesktopBackgroundController();
-
-  BackgroundMode desktop_background_mode() const {
-    return desktop_background_mode_;
-  }
-
-  void set_command_line_for_testing(CommandLine* command_line) {
-    command_line_for_testing_ = command_line;
-  }
-
-  // Add/Remove observers.
-  void AddObserver(DesktopBackgroundControllerObserver* observer);
-  void RemoveObserver(DesktopBackgroundControllerObserver* observer);
-
-  // Provides current image on the background, or empty gfx::ImageSkia if there
-  // is no image, e.g. background is none.
-  gfx::ImageSkia GetWallpaper() const;
-
-  WallpaperLayout GetWallpaperLayout() const;
-
-  // Initialize root window's background.
-  void OnRootWindowAdded(aura::Window* root_window);
-
-  // Loads builtin wallpaper asynchronously and sets to current wallpaper
-  // after loaded. Returns true if the controller started loading the
-  // wallpaper and false otherwise (i.e. the appropriate wallpaper was
-  // already loading or loaded).
-  bool SetDefaultWallpaper(bool is_guest);
-
-  // Sets the user selected custom wallpaper. Called when user selected a file
-  // from file system or changed the layout of wallpaper.
-  void SetCustomWallpaper(const gfx::ImageSkia& image, WallpaperLayout layout);
-
-  // Cancels the current wallpaper loading operation.
-  void CancelPendingWallpaperOperation();
-
-  // Creates an empty wallpaper. Some tests require a wallpaper widget is ready
-  // when running. However, the wallpaper widgets are now created asynchronously
-  // . If loading a real wallpaper, there are cases that these tests crash
-  // because the required widget is not ready. This function synchronously
-  // creates an empty widget for those tests to prevent crashes. An example test
-  // is SystemGestureEventFilterTest.ThreeFingerSwipe.
-  void CreateEmptyWallpaper();
-
-  // Returns the appropriate wallpaper resolution for all root windows.
-  WallpaperResolution GetAppropriateResolution();
-
-  // Move all desktop widgets to locked container.
-  // Returns true if the desktop moved.
-  bool MoveDesktopToLockedContainer();
-
-  // Move all desktop widgets to unlocked container.
-  // Returns true if the desktop moved.
-  bool MoveDesktopToUnlockedContainer();
-
-  // Overrides DisplayController::Observer:
-  virtual void OnDisplayConfigurationChanged() OVERRIDE;
-
- private:
-  friend class DesktopBackgroundControllerTest;
-  FRIEND_TEST_ALL_PREFIXES(DesktopBackgroundControllerTest, GetMaxDisplaySize);
-
-  // An operation to asynchronously loads wallpaper.
-  class WallpaperLoader;
-
-  // Returns true if the specified default wallpaper is already being
-  // loaded by |wallpaper_loader_| or stored in |current_wallpaper_|.
-  bool DefaultWallpaperIsAlreadyLoadingOrLoaded(
-      const base::FilePath& image_file, int image_resource_id) const;
-
-  // Returns true if the specified custom wallpaper is already stored
-  // in |current_wallpaper_|.
-  bool CustomWallpaperIsAlreadyLoaded(const gfx::ImageSkia& image) const;
-
-  // Creates view for all root windows, or notifies them to repaint if they
-  // already exist.
-  void SetDesktopBackgroundImageMode();
-
-  // Creates a new background widget and sets the background mode to image mode.
-  // Called after a default wallpaper has been loaded successfully.
-  void OnDefaultWallpaperLoadCompleted(scoped_refptr<WallpaperLoader> loader);
-
-  // Creates and adds component for current mode (either Widget or Layer) to
-  // |root_window|.
-  void InstallDesktopController(aura::Window* root_window);
-
-  // Creates and adds component for current mode (either Widget or Layer) to
-  // all root windows.
-  void InstallDesktopControllerForAllWindows();
-
-  // Moves all desktop components from one container to other across all root
-  // windows. Returns true if a desktop moved.
-  bool ReparentBackgroundWidgets(int src_container, int dst_container);
-
-  // Returns id for background container for unlocked and locked states.
-  int GetBackgroundContainerId(bool locked);
-
-  // Send notification that background animation finished.
-  void NotifyAnimationFinished();
-
-  // Reload the wallpaper.
-  void UpdateWallpaper();
-
-  void set_wallpaper_reload_delay_for_test(bool value) {
-    wallpaper_reload_delay_ = value;
-  }
-
-  // Returns the maximum size of all displays combined in native
-  // resolutions.  Note that this isn't the bounds of the display who
-  // has maximum resolutions. Instead, this returns the size of the
-  // maximum width of all displays, and the maximum height of all displays.
-  static gfx::Size GetMaxDisplaySizeInNative();
-
-  // If non-NULL, used in place of the real command line.
-  CommandLine* command_line_for_testing_;
-
-  // Can change at runtime.
-  bool locked_;
-
-  BackgroundMode desktop_background_mode_;
-
-  SkColor background_color_;
-
-  ObserverList<DesktopBackgroundControllerObserver> observers_;
-
-  // The current wallpaper.
-  scoped_ptr<WallpaperResizer> current_wallpaper_;
-
-  // If a default wallpaper is stored in |current_wallpaper_|, the path and
-  // resource ID that were passed to WallpaperLoader when loading it.
-  // Otherwise, empty and -1, respectively.
-  base::FilePath current_default_wallpaper_path_;
-  int current_default_wallpaper_resource_id_;
-
-  gfx::Size current_max_display_size_;
-
-  scoped_refptr<WallpaperLoader> wallpaper_loader_;
-
-  base::WeakPtrFactory<DesktopBackgroundController> weak_ptr_factory_;
-
-  base::OneShotTimer<DesktopBackgroundController> timer_;
-
-  int wallpaper_reload_delay_;
-
-  DISALLOW_COPY_AND_ASSIGN(DesktopBackgroundController);
-};
-
-}  // namespace ash
-
-#endif  // ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_CONTROLLER_H_