Polish lock animation - launcher should do a fade out.

ash/wm/power_button_controller.h

 // 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_WM_POWER_BUTTON_CONTROLLER_H_
 #define ASH_WM_POWER_BUTTON_CONTROLLER_H_
 
 #include "ash/ash_export.h"
 #include "ash/shell_observer.h"
 #include "base/basictypes.h"
@@ skipping 40 matching lines @@
     ANIMATION_FADE_IN,
     ANIMATION_HIDE,
     ANIMATION_RESTORE,
   };
 
   // Specific containers or groups of containers that can be animated.
   // Exposed here for TestApi::ContainersAreAnimated().
   enum Container {
     DESKTOP_BACKGROUND = 1 << 0,
 
+    LAUNCHER = 1 << 1,
+
     // All user session related containers including system background but
-    // not including desktop background (wallpaper).
-    NON_LOCK_SCREEN_CONTAINERS = 1 << 1,
+    // not including desktop background (wallpaper) and launcher.
+    NON_LOCK_SCREEN_CONTAINERS = 1 << 2,
 
     // Desktop wallpaper is moved to this layer when screen is locked.
     // This layer is excluded from lock animation so that wallpaper stays as is,
     // user session windows are hidden and lock UI is shown on top of it.
     // This layer is included in shutdown animation.
-    LOCK_SCREEN_BACKGROUND = 1 << 2,
+    LOCK_SCREEN_BACKGROUND = 1 << 3,
 
     // Lock screen and lock screen modal containers.
-    LOCK_SCREEN_CONTAINERS = 1 << 3,
+    LOCK_SCREEN_CONTAINERS = 1 << 4,
 
     // Multiple system layers belong here like status, menu, tooltip
     // and overlay layers.
-    LOCK_SCREEN_RELATED_CONTAINERS = 1 << 4,
+    LOCK_SCREEN_RELATED_CONTAINERS = 1 << 5,
   };
 
   // Helper class used by tests to access internal state.
   class ASH_EXPORT TestApi {
    public:
     explicit TestApi(PowerButtonController* controller)
         : controller_(controller) {}
 
     bool lock_timer_is_running() const {
       return controller_->lock_timer_.IsRunning();
@@ skipping 185 matching lines @@
   // |black_layer_|, as the desktop background is now covering the whole
   // screen.
   base::OneShotTimer<PowerButtonController> hide_black_layer_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerButtonController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_POWER_BUTTON_CONTROLLER_H_