Fix NSString conversions to treat a null NSString as a string of length 0, in...

base/base.gyp

 # Copyright (c) 2009 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,
   },
   'targets': [
     {
@@ skipping 601 matching lines @@
         'sha2_unittest.cc',
         'shared_memory_unittest.cc',
         'simple_thread_unittest.cc',
         'singleton_unittest.cc',
         'stack_container_unittest.cc',
         'stats_table_unittest.cc',
         'string_piece_unittest.cc',
         'string_tokenizer_unittest.cc',
         'string_util_unittest.cc',
         'sys_info_unittest.cc',
+        'sys_string_conversions_mac_unittest.mm',
         'sys_string_conversions_unittest.cc',
         'system_monitor_unittest.cc',
         'task_unittest.cc',
         'thread_collision_warner_unittest.cc',
         'thread_local_storage_unittest.cc',
         'thread_local_unittest.cc',
         'thread_unittest.cc',
         'time_unittest.cc',
         'time_win_unittest.cc',
         'timer_unittest.cc',
@@ skipping 204 matching lines @@
       ],
     }],
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: