Add gpu targets to untrusted NaCl build.

gpu/command_buffer/command_buffer.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,
   },
+  'includes': [
+    'command_buffer.gypi',
+  ],
   'targets': [
     {
       'target_name': 'gles2_utils',
       'type': '<(component)',
-      'include_dirs': [
-        '<(DEPTH)/third_party/khronos',
-      ],
+      'variables': {
+        'gles2_utils_target': 1,
+      },
       'all_dependent_settings': {
         'include_dirs': [
           '<(DEPTH)/third_party/khronos',
         ],
       },
       'dependencies': [
         '../../base/base.gyp:base',
       ],
       'export_dependent_settings': [
         '../../base/base.gyp:base',
       ],
-      'defines': [
-        'GLES2_UTILS_IMPLEMENTATION',
-      ],
-      'sources': [
-        'common/gles2_cmd_format.h',
-        'common/gles2_cmd_utils.cc',
-        'common/gles2_cmd_utils.h',
-        'common/gles2_utils_export.h',
-        'common/logging.cc',
-        'common/logging.h',
-      ],
     },
   ],
 }