Keep dedicated layers for hiding animation

ui/views/views.gyp

 # 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.
 {
   'variables': {
     'chromium_code': 1,
   },
   'target_defaults': {
     'conditions': [
       ['use_aura==1', {
@@ skipping 740 matching lines @@
         'corewm/compound_event_filter_unittest.cc',
         'corewm/cursor_manager_unittest.cc',
         'corewm/focus_controller_unittest.cc',
         'corewm/image_grid_unittest.cc',
         'corewm/input_method_event_filter_unittest.cc',
         'corewm/shadow_controller_unittest.cc',
         'corewm/tooltip_aura_unittest.cc',
         'corewm/tooltip_controller_unittest.cc',
         'corewm/transient_window_manager_unittest.cc',
         'corewm/transient_window_stacking_client_unittest.cc',
-        'corewm/visibility_controller_unittest.cc',
         'corewm/window_animations_unittest.cc',
         'corewm/window_util_unittest.cc',
         'focus/focus_manager_test.h',
         'focus/focus_manager_test.cc',
         'focus/focus_manager_unittest.cc',
         'focus/focus_manager_unittest_win.cc',
         'focus/focus_traversal_unittest.cc',
         'ime/input_method_bridge_unittest.cc',
         'layout/box_layout_unittest.cc',
         'layout/grid_layout_unittest.cc',
@@ skipping 295 matching lines @@
           'sources/': [
             # This is needed because the aura rule strips it from the default
             # sources list.
             ['include', '^../../content/app/startup_helper_win.cc'],
           ],
         }],
       ],
     },  # target_name: views_examples_with_content_exe
   ],
 }