ui: Use a PaintRecorder to access the Canvas for painting.

ui/aura_extra/aura_extra.gyp

 # Copyright 2015 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': [
     {
       # GN version: //ui/aura_extra
       'target_name': 'aura_extra',
       'type': '<(component)',
       'dependencies': [
         '../../base/base.gyp:base',
         '../../skia/skia.gyp:skia',
         '../aura/aura.gyp:aura',
         '../base/ui_base.gyp:ui_base',
+        '../compositor/compositor.gyp:compositor',
         '../events/events.gyp:events',
         '../gfx/gfx.gyp:gfx',
         '../gfx/gfx.gyp:gfx_geometry',
       ],
       'defines': [
         'AURA_EXTRA_IMPLEMENTATION',
       ],
       'sources': [
         'aura_extra_export.h',
         'image_window_delegate.cc',
         'image_window_delegate.h',
       ],
     },
   ],
 }