Compile libaddressinput on Mac.

third_party/libaddressinput/libaddressinput.gyp

 # Copyright 2013 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.
 {
   'target_defaults': {
-    'cflags!': [
-      '-fvisibility=hidden',
-    ],
     'conditions': [
       ['OS=="mac" or OS=="ios"', {
         'xcode_settings': {
-          'GCC_SYMBOLS_PRIVATE_EXTERN': 'NO',
           'GCC_WARN_ABOUT_MISSING_NEWLINE': 'NO',
-        }
+        },
       }],
     ],
   },
   'targets': [
     {
       'target_name': 'generated_messages',
       'type': 'none',
       'variables': {
         'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/libaddressinput/',
       },
@@ skipping 64 matching lines @@
         'src/cpp/test/util/json_test.cc',
       ],
       'dependencies': [
         'libaddressinput',
         '<(DEPTH)/base/base.gyp:run_all_unittests',
         '<(DEPTH)/testing/gtest.gyp:gtest',
       ],
     },
   ],
 }