Pepper: Add some basic tests for PPB_Audio.

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 58 matching lines @@
         'tests/test_case.h',
         'tests/testing_instance.cc',
         'tests/testing_instance.h',
 
         # Test cases.
         'tests/all_c_includes.h',
         'tests/all_cpp_includes.h',
         'tests/arch_dependent_sizes_32.h',
         'tests/arch_dependent_sizes_64.h',
         'tests/pp_thread.h',
+        'tests/test_audio.cc',
+        'tests/test_audio.h',
         'tests/test_audio_config.cc',
         'tests/test_audio_config.h',
         'tests/test_broker.cc',
         'tests/test_broker.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 425 matching lines @@
               # Var_deprecated fails in TestPassReference, and we probably won't
               # fix it.
               #'tests/test_var_deprecated.cc'
             ],
           },
         },
       ],
     }],
   ],
 }