Implement UI automation on the Mac....

chrome/chrome_browser.gypi

 # Copyright (c) 2010 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': 'browser',
       'type': '<(library)',
       'msvs_guid': '5BF908A7-68FB-4A4B-99E3-8C749F1FE4EA',
@@ skipping 192 matching lines @@
         'browser/automation/automation_resource_tracker.h',
         'browser/automation/automation_tab_tracker.h',
         'browser/automation/chrome_frame_automation_provider.cc',
         'browser/automation/chrome_frame_automation_provider.h',
         'browser/automation/url_request_automation_job.cc',
         'browser/automation/url_request_automation_job.h',
         'browser/automation/automation_window_tracker.h',
         'browser/automation/extension_port_container.cc',
         'browser/automation/extension_port_container.h',
         'browser/automation/ui_controls_linux.cc',
+        'browser/automation/ui_controls_mac.mm',
         'browser/automation/ui_controls_win.cc',
         'browser/automation/ui_controls.h',
         'browser/back_forward_menu_model.cc',
         'browser/back_forward_menu_model.h',
         'browser/blocked_popup_container.cc',
         'browser/blocked_popup_container.h',
         'browser/bookmarks/bookmark_codec.cc',
         'browser/bookmarks/bookmark_codec.h',
         'browser/bookmarks/bookmark_context_menu_controller.cc',
         'browser/bookmarks/bookmark_context_menu_controller.h',
@@ skipping 3132 matching lines @@
       ]
     },
   ],
 }
 
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