Add gpu targets to untrusted build, and add Graphics3D code to untrusted build.

gpu/command_buffer/command_buffer.gypi

Index: gpu/command_buffer/command_buffer.gypi
===================================================================
--- gpu/command_buffer/command_buffer.gypi	(revision 0)
+++ gpu/command_buffer/command_buffer.gypi	(revision 0)
@@ -0,0 +1,30 @@
+# 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.
+
+{
+  'target_defaults': {
+    'variables': {
+      'gles2_utils_target': 0,
+    },
+    'target_conditions': [
+      # This part is shared between the targets defined below.
+      ['gles2_utils_target==1', {
+        'defines': [
+          'GLES2_UTILS_IMPLEMENTATION',
+        ],
+        'include_dirs': [
+          '<(DEPTH)/third_party/khronos',
+        ],
+        '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',
+        ],
+      }],
+    ],
+  },
+}