Add more testing to trusted graphics_3d.

ppapi/ppapi_sources.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.
 
 {
   'variables': {
     'c_source_files': [
       'c/pp_array_output.h',
       'c/pp_bool.h',
       'c/pp_completion_callback.h',
@@ skipping 374 matching lines @@
       # Test cases (PLEASE KEEP THIS SECTION IN ALPHABETICAL ORDER)
       'tests/test_tcp_server_socket_private_disallowed.cc',
       'tests/test_tcp_socket_private_disallowed.cc',
       'tests/test_udp_socket_private_disallowed.cc',
     ],
     #
     # Sources used in trusted tests.
     #
     'test_trusted_source_files': [
       # Test cases (PLEASE KEEP THIS SECTION IN ALPHABETICAL ORDER)
+      'lib/gl/gles2/gles2.c',
+      'lib/gl/gles2/gl2ext_ppapi.c',
+      'lib/gl/gles2/gl2ext_ppapi.h',
       'tests/test_broker.cc',
       'tests/test_broker.h',
       'tests/test_browser_font.cc',
       'tests/test_browser_font.h',
       'tests/test_buffer.cc',
       'tests/test_buffer.h',
       'tests/test_c_includes.c',
       'tests/test_char_set.cc',
       'tests/test_char_set.h',
       'tests/test_core.cc',
@@ skipping 34 matching lines @@
       'tests/test_x509_certificate_private.h',
 
       # Deprecated test cases.
       'tests/test_instance_deprecated.cc',
       'tests/test_instance_deprecated.h',
       'tests/test_var_deprecated.cc',
       'tests/test_var_deprecated.h',
     ],
   },
 }