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

ash/desktop_background/desktop_background_view.cc

 // 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.
 
 #include "ash/desktop_background/desktop_background_view.h"
 
 #include <limits>
 
 #include "ash/ash_export.h"
 #include "ash/desktop_background/desktop_background_controller.h"
@@ skipping 189 matching lines @@
   // Enable wallpaper transition for the following cases:
   // 1. Initial(OOBE) wallpaper animation.
   // 2. Wallpaper fades in from a non empty background.
   // 3. From an empty background, chrome transit to a logged in user session.
   // 4. From an empty background, guest user logged in.
   if (wallpaper_delegate->ShouldShowInitialAnimation() ||
       root_window_controller->animating_wallpaper_controller() ||
       Shell::GetInstance()->session_state_delegate()->NumberOfLoggedInUsers()) {
     views::corewm::SetWindowVisibilityAnimationTransition(
         desktop_widget->GetNativeView(), views::corewm::ANIMATE_SHOW);
+    int duration_override = wallpaper_delegate->GetAnimationDurationOverride();
+    if (duration_override) {
+      views::corewm::SetWindowVisibilityAnimationDuration(
+          desktop_widget->GetNativeView(),
+          base::TimeDelta::FromMilliseconds(duration_override));
+    }
   } else {
     // Disable animation if transition to login screen from an empty background.
     views::corewm::SetWindowVisibilityAnimationTransition(
         desktop_widget->GetNativeView(), views::corewm::ANIMATE_NONE);
   }
 
   desktop_widget->SetBounds(params.parent->bounds());
   return desktop_widget;
 }
 
 }  // namespace internal
 }  // namespace ash