Creating multi profile animations for switching users and teleporting of windows.

ash/desktop_background/user_wallpaper_delegate.h

 // Copyright 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_USER_WALLPAPER_DELEGATE_H_
 #define ASH_DESKTOP_BACKGROUND_USER_WALLPAPER_DELEGATE_H_
 
 #include "ash/ash_export.h"
 #include "ui/views/corewm/window_animations.h"
 
 namespace ash {
 
 class ASH_EXPORT UserWallpaperDelegate {
  public:
   virtual ~UserWallpaperDelegate() {}
 
   // Returns the type of window animation that should be used when showing the
   // wallpaper.
   virtual int GetAnimationType() = 0;
 
+  // Returns the wallpaper animation duration in ms. A value of 0 indicates
+  // that the default should be used.
+  virtual int GetAnimationDurationOverride() = 0;
+
+  // Sets wallpaper animation duration in ms. Pass 0 to use the default.
+  virtual void SetAnimationDurationOverride(int animation_duration_in_ms) = 0;
+
   // Should the slower initial animation be shown (as opposed to the faster
   // animation that's used e.g. when switching from one user's wallpaper to
   // another's on the login screen)?
   virtual bool ShouldShowInitialAnimation() = 0;
 
   // Updates current wallpaper. It may switch the size of wallpaper based on the
   // current display's resolution.
   virtual void UpdateWallpaper() = 0;
 
   // Initialize wallpaper.
   virtual void InitializeWallpaper() = 0;
 
   // Opens the set wallpaper page in the browser.
   virtual void OpenSetWallpaperPage() = 0;
 
   // Returns true if user can open set wallpaper page. Only guest user returns
   // false currently.
   virtual bool CanOpenSetWallpaperPage() = 0;
 
   // Notifies delegate that wallpaper animation has finished.
   virtual void OnWallpaperAnimationFinished() = 0;
 
   // Notifies delegate that wallpaper boot animation has finished.
   virtual void OnWallpaperBootAnimationFinished() = 0;
 };
 
 }  // namespace ash
 
 #endif  // ASH_DESKTOP_BACKGROUND_USER_WALLPAPER_DELEGATE_H_