Mac: Avoid deprecated use of ::Gestalt() in base/sys_info_mac

base/base.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.
 
 {
   'includes': [
     'trace_event/trace_event.gypi',
   ],
   'target_defaults': {
     'variables': {
@@ skipping 608 matching lines @@
           'synchronization/waitable_event_win.cc',
           'sys_byteorder.h',
           'sys_info.cc',
           'sys_info.h',
           'sys_info_android.cc',
           'sys_info_chromeos.cc',
           'sys_info_freebsd.cc',
           'sys_info_internal.h',
           'sys_info_ios.mm',
           'sys_info_linux.cc',
-          'sys_info_mac.cc',
+          'sys_info_mac.mm',
           'sys_info_openbsd.cc',
           'sys_info_posix.cc',
           'sys_info_win.cc',
           'system_monitor/system_monitor.cc',
           'system_monitor/system_monitor.h',
           'task/cancelable_task_tracker.cc',
           'task/cancelable_task_tracker.h',
           'task_runner.cc',
           'task_runner.h',
           'task_runner_util.h',
@@ skipping 438 matching lines @@
           'i18n/time_formatting.h',
           'i18n/timezone.cc',
           'i18n/timezone.h',
           'i18n/utf8_validator_tables.cc',
           'i18n/utf8_validator_tables.h',
         ],
       }]
     ],
   },
 }