Make a new test to enforce the sizes of all structs and enums in the C API....

ppapi/ppapi.gyp

 # Copyright (c) 2010 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,  # Use higher warning level.
   },
   'target_defaults': {
@@ skipping 405 matching lines @@
       'target_name': 'ppapi_tests',
       'type': 'loadable_module',
       '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_cc_includes.h',
         'tests/test_buffer.cc',
         'tests/test_buffer.h',
-        'tests/test_c_includes.c',
+        'tests/test_c_sizes.c',
         'tests/test_cc_includes.cc',
         'tests/test_char_set.cc',
         'tests/test_char_set.h',
         'tests/test_directory_reader.cc',
         'tests/test_directory_reader.h',
         'tests/test_file_io.cc',
         'tests/test_file_io.h',
         'tests/test_file_ref.cc',
         'tests/test_file_ref.h',
         'tests/test_graphics_2d.cc',
@@ skipping 145 matching lines @@
         ['OS=="win"', {
         }],
         ['OS=="linux"', {
         }],
         ['OS=="mac"', {
         }]
       ],
     },
   ],
 }