Reverting this CL because it was committed before I gave the final LGTM.

chrome/chrome_tests.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.
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 2769 matching lines @@
         'browser/browsing_data/browsing_data_database_helper_browsertest.cc',
         'browser/browsing_data/browsing_data_helper_browsertest.h',
         'browser/browsing_data/browsing_data_indexed_db_helper_browsertest.cc',
         'browser/browsing_data/browsing_data_local_storage_helper_browsertest.cc',
         'browser/browsing_data/browsing_data_remover_browsertest.cc',
         'browser/captive_portal/captive_portal_browsertest.cc',
         'browser/chrome_content_browser_client_browsertest.cc',
         'browser/chrome_main_browsertest.cc',
         'browser/chrome_plugin_browsertest.cc',
         'browser/chrome_switches_browsertest.cc',
-        'browser/chromeos/accessibility/magnification_manager_browsertest.cc',
         'browser/chromeos/bluetooth/test/mock_bluetooth_adapter.cc',
         'browser/chromeos/bluetooth/test/mock_bluetooth_adapter.h',
         'browser/chromeos/bluetooth/test/mock_bluetooth_device.cc',
         'browser/chromeos/bluetooth/test/mock_bluetooth_device.h',
         'browser/chromeos/contacts/contact_test_util.cc',
         'browser/chromeos/contacts/gdata_contacts_service_browsertest.cc',
         'browser/chromeos/cros/cros_in_process_browser_test.cc',
         'browser/chromeos/cros/cros_in_process_browser_test.h',
         'browser/chromeos/cros/cros_mock.cc',
         'browser/chromeos/cros/cros_mock.h',
@@ skipping 2139 matching lines @@
                 '--result', '<@(_outputs)',
                 '--isolate', 'sync_integration_tests.isolate',
               ],
             },
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }