Use WebKit compositor in ui::Layer

ui/aura_shell/aura_shell.gyp

 # Copyright (c) 2011 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,
   },
 
   'targets': [
@@ skipping 86 matching lines @@
         '../../skia/skia.gyp:skia',
         '../../third_party/icu/icu.gyp:icui18n',
         '../../third_party/icu/icu.gyp:icuuc',
         '../../views/views.gyp:views',
         '../aura/aura.gyp:aura',
         '../gfx/compositor/compositor.gyp:compositor',
         '../ui.gyp:gfx_resources',
         '../ui.gyp:ui',
         '../ui.gyp:ui_resources',
         '../ui.gyp:ui_resources_standard',
+        '../../webkit/support/webkit_support.gyp:webkit_support',
         'aura_shell',
       ],
       'sources': [
         'examples/aura_shell_main.cc',
         'examples/bubble.cc',
         'examples/example_factory.h',
         'examples/lock_view.cc',
         'examples/toplevel_window.cc',
         'examples/toplevel_window.h',
         'examples/widgets.cc',
@@ skipping 22 matching lines @@
         '../../views/views.gyp:views_desktop',
         '../../views/views.gyp:views_desktop_lib',
         '../../views/views.gyp:views_unittests',
         '../aura/aura.gyp:*',
         '../gfx/compositor/compositor.gyp:*',
         'aura_shell_exe',
       ],
     },
   ],
 }