Rework View Layer Draw() to use the Layer::DrawTree() method and the LayerDelegate.

aura/aura.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 56 matching lines @@
         'demo/demo_main.cc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/gfx/gfx_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_resources.rc',
       ],
     },
     {
       'target_name': 'aura_unittests',
       'type': 'executable',
       'dependencies': [
         '<(DEPTH)/base/base.gyp:test_support_base',
-        '../chrome/chrome.gyp:packed_resources',
+        '<(DEPTH)/chrome/chrome.gyp:packed_resources',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         '<(DEPTH)/ui/ui.gyp:gfx_resources',
         '<(DEPTH)/ui/ui.gyp:ui',
         '<(DEPTH)/ui/ui.gyp:ui_resources',
         'aura',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'window_unittest.cc',
         'run_all_unittests.cc',
         'test_suite.cc',
         'test_suite.h',
         '<(SHARED_INTERMEDIATE_DIR)/ui/gfx/gfx_resources.rc',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/ui_resources.rc',
       ],
     },
   ],
 }