Add more testing to trusted graphics_3d.

ppapi/ppapi_tests.gypi

 # 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.
 
 {
   'targets': [
      {
       'target_name': 'ppapi_example',
       'dependencies': [
         'ppapi.gyp:ppapi_cpp'
@@ skipping 45 matching lines @@
       #    },
       #  }],
       #],
     },
     {
       'target_name': 'ppapi_tests',
       'type': 'loadable_module',
       'include_dirs': [
         'lib/gl/include',
       ],
+      'defines': [
+        'GL_GLEXT_PROTOTYPES',
+      ],
       'sources': [
         '<@(test_common_source_files)',
         '<@(test_trusted_source_files)',
       ],
       'dependencies': [
         'ppapi.gyp:ppapi_cpp',
         'ppapi_internal.gyp:ppapi_shared',
       ],
       'run_as': {
         'action': [
@@ skipping 354 matching lines @@
       'dependencies': [
         'ppapi_example_skeleton',
         'ppapi.gyp:ppapi_cpp',
       ],
       'sources': [
         'examples/printing/printing.cc',
       ],
     },
   ],
 }