mash: Migrate wallpaper controllers to ash/common.

ash/wallpaper/wallpaper_controller.h

Index: ash/wallpaper/wallpaper_controller.h
diff --git a/ash/wallpaper/wallpaper_controller.h b/ash/wallpaper/wallpaper_controller.h
deleted file mode 100644
index b469e37b1c11994304d6c227e8eda0b3af061dc1..0000000000000000000000000000000000000000
--- a/ash/wallpaper/wallpaper_controller.h
+++ /dev/null
@@ -1,134 +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_WALLPAPER_WALLPAPER_CONTROLLER_H_
-#define ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_
-
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "ash/common/shell_observer.h"
-#include "ash/common/wm_display_observer.h"
-#include "base/observer_list.h"
-#include "base/timer/timer.h"
-#include "components/wallpaper/wallpaper_layout.h"
-#include "ui/gfx/image/image_skia.h"
-
-namespace base {
-class SequencedWorkerPool;
-}
-
-namespace wallpaper {
-class WallpaperResizer;
-}
-
-namespace ash {
-
-class WallpaperControllerObserver;
-
-// Controls the desktop background wallpaper.
-class ASH_EXPORT WallpaperController : public WmDisplayObserver,
-                                       public ShellObserver {
- public:
-  enum WallpaperMode { WALLPAPER_NONE, WALLPAPER_IMAGE };
-
-  explicit WallpaperController(base::SequencedWorkerPool* blocking_pool);
-  ~WallpaperController() override;
-
-  // Add/Remove observers.
-  void AddObserver(WallpaperControllerObserver* observer);
-  void RemoveObserver(WallpaperControllerObserver* observer);
-
-  // Provides current image on the wallpaper, or empty gfx::ImageSkia if there
-  // is no image, e.g. wallpaper is none.
-  gfx::ImageSkia GetWallpaper() const;
-
-  wallpaper::WallpaperLayout GetWallpaperLayout() const;
-
-  // Sets wallpaper. This is mostly called by WallpaperManager to set
-  // the default or user selected custom wallpaper.
-  // Returns true if new image was actually set. And false when duplicate set
-  // request detected.
-  bool SetWallpaperImage(const gfx::ImageSkia& image,
-                         wallpaper::WallpaperLayout layout);
-
-  // 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();
-
-  // Move all wallpaper widgets to the locked container.
-  // Returns true if the wallpaper moved.
-  bool MoveToLockedContainer();
-
-  // Move all wallpaper widgets to unlocked container.
-  // Returns true if the wallpaper moved.
-  bool MoveToUnlockedContainer();
-
-  // WmDisplayObserver:
-  void OnDisplayConfigurationChanged() override;
-
-  // ShellObserver:
-  void OnRootWindowAdded(WmWindow* root_window) override;
-
-  // 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();
-
-  // Returns true if the specified wallpaper is already stored
-  // in |current_wallpaper_|.
-  // If |compare_layouts| is false, layout is ignored.
-  bool WallpaperIsAlreadyLoaded(const gfx::ImageSkia& image,
-                                bool compare_layouts,
-                                wallpaper::WallpaperLayout layout) const;
-
-  void set_wallpaper_reload_delay_for_test(int value) {
-    wallpaper_reload_delay_ = value;
-  }
-
- private:
-  // Creates a WallpaperWidgetController for |root_window|.
-  void InstallDesktopController(WmWindow* root_window);
-
-  // Creates a WallpaperWidgetController for all root windows.
-  void InstallDesktopControllerForAllWindows();
-
-  // Moves the wallpaper to the specified container across all root windows.
-  // Returns true if a wallpaper moved.
-  bool ReparentWallpaper(int container);
-
-  // Returns the wallpaper container id for unlocked and locked states.
-  int GetWallpaperContainerId(bool locked);
-
-  // Reload the wallpaper. |clear_cache| specifies whether to clear the
-  // wallpaper cahce or not.
-  void UpdateWallpaper(bool clear_cache);
-
-  bool locked_;
-
-  WallpaperMode wallpaper_mode_;
-
-  base::ObserverList<WallpaperControllerObserver> observers_;
-
-  std::unique_ptr<wallpaper::WallpaperResizer> current_wallpaper_;
-
-  gfx::Size current_max_display_size_;
-
-  base::OneShotTimer timer_;
-
-  int wallpaper_reload_delay_;
-
-  base::SequencedWorkerPool* blocking_pool_;
-
-  DISALLOW_COPY_AND_ASSIGN(WallpaperController);
-};
-
-}  // namespace ash
-
-#endif  // ASH_WALLPAPER_WALLPAPER_CONTROLLER_H_