Remove ENABLE_MESSAGE_CENTER

chrome/chrome_tests.gypi

 # 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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 460 matching lines @@
           },
           # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
           'msvs_disabled_warnings': [ 4267, ],
         }, { # else: OS != "win"
           'sources!': [
             'browser/ui/views/ssl_client_certificate_selector_browsertest.cc',
             'browser/ui/views/message_center/web_notification_tray_win_browsertest.cc',
             'browser/ui/views/native_widget_win_interactive_uitest.cc',
           ],
         }],  # OS != "win"
-        ['enable_message_center==0', {
-          'sources!': [
-            'browser/ui/views/message_center/web_notification_tray_win_browsertest.cc',
-          ],
-        }],  # enable_message_center
       ],  # conditions
     },
     {
       # Third-party support sources for chromedriver_lib.
       'target_name': 'chromedriver_support',
       'type': 'static_library',
       'sources': [
         '../third_party/mongoose/mongoose.c',
         '../third_party/mongoose/mongoose.h',
         '../third_party/webdriver/atoms.cc',
@@ skipping 1519 matching lines @@
             # build time dependency.
             '../v8/tools/gyp/v8.gyp:v8_shell#host',
             '../webkit/webkit.gyp:copy_npapi_test_plugin',
           ],
         }],
         ['enable_app_list==0', {
           'sources/': [
             ['exclude', '^browser/ui/app_list/'],
           ],
         }],
-        ['enable_message_center==0', {
-          'sources!': [
-            'browser/notifications/message_center_notifications_browsertest.cc',
-          ],
-        }],
         ['enable_plugins==1', {
           'dependencies': [
             # Runtime dependency.
             '../third_party/widevine/cdm/widevine_cdm.gyp:widevinecdmadapter',
             '../webkit/support/webkit_support.gyp:clearkeycdmadapter',
           ],
         }],
         ['chromeos==1', {
           'sources!': [
             'browser/ui/webui/options/managed_user_set_passphrase_browsertest.js',
@@ skipping 1365 matching lines @@
               # more details.
               'DebugInformationFormat': '3',
               'ProgramDataBaseFileName': '<(PRODUCT_DIR)/browser_tests.exe.pdb',
             },
           },
         },
       ],
     }],
   ],  # 'conditions'
 }