chromeos: Implement power button animations for Aura.

ash/ash.gyp

Index: ash/ash.gyp
diff --git a/ash/ash.gyp b/ash/ash.gyp
index eaea11341d64944938aa9a14d3b52c479f317e0d..1e61eaa71be48a0bcc15cbe2ce02e10d87977d6f 100644
--- a/ash/ash.gyp
+++ b/ash/ash.gyp
@@ -1,4 +1,4 @@
-# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# 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.
 
@@ -114,6 +114,8 @@
         'wm/modality_event_filter.cc',
         'wm/modality_event_filter.h',
         'wm/modality_event_filter_delegate.h',
+        'wm/power_button_controller.cc',
+        'wm/power_button_controller.h',
         'wm/property_util.cc',
         'wm/property_util.h',
         'wm/root_window_event_filter.cc',
@@ -200,6 +202,7 @@
         'wm/default_container_layout_manager_unittest.cc',
         'wm/image_grid_unittest.cc',
         'wm/modal_container_layout_manager_unittest.cc',
+        'wm/power_button_controller_unittest.cc',
         'wm/root_window_event_filter_unittest.cc',
         'wm/shadow_controller_unittest.cc',
         'wm/shelf_layout_manager_unittest.cc',