Fix accelerated_widget_mac compile

ui/accelerated_widget_mac/accelerated_widget_mac.gyp

 # Copyright 2014 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 44 matching lines @@
       'target_name': 'accelerated_widget_mac_unittests',
       'type': '<(gtest_target_type)',
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/base/base.gyp:run_all_unittests',
         '<(DEPTH)/base/base.gyp:test_support_base',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<(DEPTH)/testing/gmock.gyp:gmock',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         '<(DEPTH)/ui/gfx/gfx.gyp:gfx_test_support',
+        '<(DEPTH)/ui/gl/gl.gyp:gl',
         'accelerated_widget_mac',
       ],
       'sources': [
         'ca_layer_tree_unittest_mac.mm',
       ],
       'link_settings': {
         'libraries': [
           '$(SDKROOT)/System/Library/Frameworks/QuartzCore.framework',
         ],
       },
     },
   ],
 }