Rename ash desktop_background to wallpaper.

ash/desktop_background/desktop_background_widget_controller.h

Index: ash/desktop_background/desktop_background_widget_controller.h
diff --git a/ash/desktop_background/desktop_background_widget_controller.h b/ash/desktop_background/desktop_background_widget_controller.h
deleted file mode 100644
index 22845545e459d1707dd2e9294c1407f54aaf7fc3..0000000000000000000000000000000000000000
--- a/ash/desktop_background/desktop_background_widget_controller.h
+++ /dev/null
@@ -1,108 +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_WIDGET_CONTROLLER_H_
-#define ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_WIDGET_CONTROLLER_H_
-
-#include <memory>
-
-#include "ash/ash_export.h"
-#include "ash/common/wm_window_observer.h"
-#include "base/macros.h"
-#include "ui/views/widget/widget_observer.h"
-
-namespace aura {
-class Window;
-}
-
-namespace ash {
-class RootWindowController;
-
-// This class implements a widget-based wallpaper.
-// DesktopBackgroundWidgetController is owned by RootWindowController.
-// When the animation completes the old DesktopBackgroundWidgetController is
-// destroyed. Exported for tests.
-class ASH_EXPORT DesktopBackgroundWidgetController
-    : public views::WidgetObserver,
-      public WmWindowObserver {
- public:
-  // Create
-  explicit DesktopBackgroundWidgetController(views::Widget* widget);
-
-  ~DesktopBackgroundWidgetController() override;
-
-  // Overridden from views::WidgetObserver.
-  void OnWidgetDestroying(views::Widget* widget) override;
-
-  // Set bounds of component that draws background.
-  void SetBounds(const gfx::Rect& bounds);
-
-  // Move component from |src_container| in |root_window| to |dest_container|.
-  // It is required for lock screen, when we need to move background so that
-  // it hides user's windows. Returns true if there was something to reparent.
-  bool Reparent(aura::Window* root_window,
-                int src_container,
-                int dest_container);
-
-  // Starts wallpaper fade in animation. |root_window_controller| is
-  // the root window where the animation will happen. (This is
-  // necessary this as |layer_| doesn't have access to the root window).
-  void StartAnimating(RootWindowController* root_window_controller);
-
-  views::Widget* widget() { return widget_; }
-
- private:
-  void RemoveObservers();
-
-  // WmWindowObserver:
-  void OnWindowBoundsChanged(WmWindow* window,
-                             const gfx::Rect& old_bounds,
-                             const gfx::Rect& new_bounds) override;
-
-  views::Widget* widget_;
-
-  // Parent of |widget_|.
-  WmWindow* widget_parent_;
-
-  DISALLOW_COPY_AND_ASSIGN(DesktopBackgroundWidgetController);
-};
-
-// This class wraps a DesktopBackgroundWidgetController pointer. It is owned
-// by RootWindowController. The instance of DesktopBackgroundWidgetController is
-// moved to this RootWindowController when the animation completes.
-// Exported for tests.
-class ASH_EXPORT AnimatingDesktopController {
- public:
-  explicit AnimatingDesktopController(
-      DesktopBackgroundWidgetController* component);
-  ~AnimatingDesktopController();
-
-  // Stops animation and makes sure OnImplicitAnimationsCompleted() is called if
-  // current animation is not finished yet.
-  // Note we have to make sure this function is called before we set
-  // kAnimatingDesktopController to a new controller. If it is not called, the
-  // animating widget/layer is closed immediately and the new one is animating
-  // from the widget/layer before animation. For instance, if a user quickly
-  // switches between red, green and blue wallpapers. The green wallpaper will
-  // first fade in from red wallpaper. And in the middle of the animation, blue
-  // wallpaper also wants to fade in. If the green wallpaper animation does not
-  // finish immediately, the green wallpaper widget will be removed and the red
-  // widget will show again. As a result, the blue wallpaper fades in from red
-  // wallpaper. This is a bad user experience. See bug http://crbug.com/156542
-  // for more details.
-  void StopAnimating();
-
-  // Gets the wrapped DesktopBackgroundWidgetController pointer. Caller should
-  // take ownership of the pointer if |pass_ownership| is true.
-  DesktopBackgroundWidgetController* GetController(bool pass_ownership);
-
- private:
-  std::unique_ptr<DesktopBackgroundWidgetController> controller_;
-
-  DISALLOW_COPY_AND_ASSIGN(AnimatingDesktopController);
-};
-
-}  // namespace ash
-
-#endif  // ASH_DESKTOP_BACKGROUND_DESKTOP_BACKGROUND_WIDGET_CONTROLLER_H_