Revert "Refactor automation messages." due to mysterious problems on mac.

chrome/chrome_common.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.
 
 {
   'target_defaults': {
     'variables': {
       'chrome_common_target': 0,
     },
     'target_conditions': [
@@ skipping 206 matching lines @@
         'common/extensions/user_script.cc',
         'common/extensions/user_script.h',
         'common/web_resource/web_resource_unpacker.cc',
         'common/web_resource/web_resource_unpacker.h',
         'common/appcache/appcache_backend_proxy.cc',
         'common/appcache/appcache_backend_proxy.h',
         'common/appcache/appcache_dispatcher.cc',
         'common/appcache/appcache_dispatcher.h',
         'common/automation_constants.cc',
         'common/automation_constants.h',
-        'common/automation_messages.cc',
-        'common/automation_messages.h',
-        'common/automation_messages_internal.h',
         'common/child_process_host.cc',
         'common/child_process_host.h',
         'common/chrome_descriptors.h',
         'common/chrome_plugin_api.h',
         'common/chrome_plugin_lib.cc',
         'common/chrome_plugin_lib.h',
         'common/chrome_plugin_util.cc',
         'common/chrome_plugin_util.h',
         'common/common_glue.cc',
         'common/css_colors.h',
@@ skipping 318 matching lines @@
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
       ],
     }],
   ],
 }