mash: Migrate wallpaper controllers to ash/common.

ash/common/wm_shell.h

 // Copyright 2016 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_COMMON_WM_SHELL_H_
 #define ASH_COMMON_WM_SHELL_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "ash/common/media_delegate.h"
 #include "ash/common/metrics/gesture_action_type.h"
 #include "ash/common/metrics/user_metrics_action.h"
 #include "ash/common/wm/lock_state_observer.h"
 #include "base/observer_list.h"
 #include "ui/base/ui_base_types.h"
 
+namespace base {
+class SequencedWorkerPool;
+}
+
 namespace display {
 class Display;
 class ManagedDisplayInfo;
 }
 
 namespace gfx {
 class Insets;
 class Point;
 }
 
@@ skipping 19 matching lines @@
 class ScopedDisableInternalMouseAndKeyboard;
 class SessionStateDelegate;
 class ShelfDelegate;
 class ShelfModel;
 class ShelfWindowWatcher;
 class ShellDelegate;
 class ShellObserver;
 class SystemTrayDelegate;
 class SystemTrayNotifier;
 class ToastManager;
+class WallpaperController;
 class WallpaperDelegate;
 class WindowCycleController;
 class WindowCycleEventFilter;
 class WindowResizer;
 class WindowSelectorController;
 class WmActivationObserver;
 class WmDisplayObserver;
 class WmWindow;
 class WorkspaceEventHandler;
 
@@ skipping 68 matching lines @@
   SystemTrayNotifier* system_tray_notifier() {
     return system_tray_notifier_.get();
   }
 
   SystemTrayDelegate* system_tray_delegate() {
     return system_tray_delegate_.get();
   }
 
   ToastManager* toast_manager() { return toast_manager_.get(); }
 
+  WallpaperController* wallpaper_controller() {
+    return wallpaper_controller_.get();
+  }
+
   WallpaperDelegate* wallpaper_delegate() { return wallpaper_delegate_.get(); }
 
   WindowCycleController* window_cycle_controller() {
     return window_cycle_controller_.get();
   }
 
   WindowSelectorController* window_selector_controller() {
     return window_selector_controller_.get();
   }
 
@@ skipping 187 matching lines @@
   void AddLockStateObserver(LockStateObserver* observer);
   void RemoveLockStateObserver(LockStateObserver* observer);
 
   void SetShelfDelegateForTesting(std::unique_ptr<ShelfDelegate> test_delegate);
   void SetPaletteDelegateForTesting(
       std::unique_ptr<PaletteDelegate> palette_delegate);
 
   // True if any touch points are down.
   virtual bool IsTouchDown() = 0;
 
+  virtual base::SequencedWorkerPool* GetBlockingPool() = 0;
+
 #if defined(OS_CHROMEOS)
   LogoutConfirmationController* logout_confirmation_controller() {
     return logout_confirmation_controller_.get();
   }
 
   // TODO(jamescook): Remove this when VirtualKeyboardController has been moved.
   virtual void ToggleIgnoreExternalKeyboard() = 0;
 #endif
 
  protected:
@@ skipping 48 matching lines @@
   std::unique_ptr<MediaDelegate> media_delegate_;
   std::unique_ptr<MruWindowTracker> mru_window_tracker_;
   std::unique_ptr<NewWindowDelegate> new_window_delegate_;
   std::unique_ptr<PaletteDelegate> palette_delegate_;
   std::unique_ptr<ShelfDelegate> shelf_delegate_;
   std::unique_ptr<ShelfModel> shelf_model_;
   std::unique_ptr<ShelfWindowWatcher> shelf_window_watcher_;
   std::unique_ptr<SystemTrayNotifier> system_tray_notifier_;
   std::unique_ptr<SystemTrayDelegate> system_tray_delegate_;
   std::unique_ptr<ToastManager> toast_manager_;
+  std::unique_ptr<WallpaperController> wallpaper_controller_;
   std::unique_ptr<WallpaperDelegate> wallpaper_delegate_;
   std::unique_ptr<WindowCycleController> window_cycle_controller_;
   std::unique_ptr<WindowSelectorController> window_selector_controller_;
 
   base::ObserverList<LockStateObserver> lock_state_observers_;
 
   // See comment for GetRootWindowForNewWindows().
   WmWindow* root_window_for_new_windows_ = nullptr;
   WmWindow* scoped_root_window_for_new_windows_ = nullptr;
 
   bool simulate_modal_window_open_for_testing_ = false;
 
 #if defined(OS_CHROMEOS)
   std::unique_ptr<LogoutConfirmationController> logout_confirmation_controller_;
 #endif
 };
 
 }  // namespace ash
 
 #endif  // ASH_COMMON_WM_SHELL_H_