mac: Add a profiler for startup time.

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 658 matching lines @@
       'browser/lifetime/application_lifetime_mac.mm',
       'browser/lifetime/application_lifetime_win.cc',
       'browser/mac/dock.h',
       'browser/mac/dock.mm',
       'browser/mac/install_from_dmg.h',
       'browser/mac/install_from_dmg.mm',
       'browser/mac/keystone_glue.h',
       'browser/mac/keystone_glue.mm',
       'browser/mac/keystone_registration.h',
       'browser/mac/keystone_registration.mm',
+      'browser/mac/mac_startup_profiler.cc',
+      'browser/mac/mac_startup_profiler.h',
       'browser/mac/master_prefs.h',
       'browser/mac/master_prefs.mm',
       'browser/mac/obsolete_system.cc',
       'browser/mac/obsolete_system.h',
       'browser/mac/relauncher.cc',
       'browser/mac/relauncher.h',
       'browser/mac/security_wrappers.cc',
       'browser/mac/security_wrappers.h',
       'browser/media/audio_stream_monitor.cc',
       'browser/media/audio_stream_monitor.h',
@@ skipping 2905 matching lines @@
             'package_name': 'org/chromium/chrome/browser',
             'template_deps': ['browser/android/tab_load_status.h'],
           },
           'includes': [ '../build/android/java_cpp_template.gypi' ],
         },
       ],
      },
     ],
   ],
 }