MacViews: Put wm window animation calls behind an interface.

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,
     # Sources lists shared with GN build.
     'views_sources': [
       'accessibility/native_view_accessibility.cc',
       'accessibility/native_view_accessibility.h',
@@ skipping 372 matching lines @@
       'corewm/tooltip_win.cc',
       'corewm/tooltip_win.h',
       'mouse_watcher_view_host.cc',
       'mouse_watcher_view_host.h',
       'touchui/touch_editing_menu.cc',
       'touchui/touch_editing_menu.h',
       'touchui/touch_selection_controller_impl.cc',
       'touchui/touch_selection_controller_impl.h',
       'widget/window_reorderer.cc',
       'widget/window_reorderer.h',
+      'widget/window_visibility_animation_aura.cc',
+      'widget/window_visibility_animation_aura.h',
     ],
     'views_desktop_aura_sources': [
       'widget/desktop_aura/desktop_capture_client.cc',
       'widget/desktop_aura/desktop_capture_client.h',
       'widget/desktop_aura/desktop_cursor_loader_updater.h',
       'widget/desktop_aura/desktop_cursor_loader_updater_auralinux.cc',
       'widget/desktop_aura/desktop_cursor_loader_updater_auralinux.h',
       'widget/desktop_aura/desktop_dispatcher_client.cc',
       'widget/desktop_aura/desktop_dispatcher_client.h',
       'widget/desktop_aura/desktop_drop_target_win.cc',
@@ skipping 480 matching lines @@
                 '../aura/aura.gyp:aura',
                 '../wm/wm.gyp:wm',
               ],
             }],
           ],
         },  # target_name: macviews_interactive_ui_tests
       ],  # targets
     }],
   ],  # conditions
 }