Added a simple smoke test for Graphics3D. It attempts to exercise the entire graphics-3d pipeline...

ppapi/ppapi_tests.gypi

 # 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.
 
 {
   'targets': [
      {
       'target_name': 'ppapi_example',
       'dependencies': [
         'ppapi.gyp:ppapi_cpp'
@@ skipping 42 matching lines @@
       #    'type' : 'executable',
       #    'xcode_settings' : {
       #      'ARGUMENTS' : '--renderer-startup-dialog --internal-pepper --no-sandbox file://${SRCROOT}/test_page.html'
       #    },
       #  }],
       #],
     },
     {
       'target_name': 'ppapi_tests',
       'type': 'loadable_module',
+      'include_dirs': [
+        'lib/gl/include',
+      ],
       'sources': [
         # Common test files.
         'tests/test_case.cc',
         'tests/test_case.h',
         'tests/testing_instance.cc',
         'tests/testing_instance.h',
 
         # Test cases.
         'tests/all_c_includes.h',
         'tests/all_cpp_includes.h',
@@ skipping 283 matching lines @@
           ],
           'sources': [
             'examples/gles2/gles2.cc',
             'examples/gles2/testdata.h',
           ],
         },
       ],
     }]
   ]
 }