No longer register app window placement preference keys on the fly.

chrome/chrome_tests_unit.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.
 {
   'targets': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 1659 matching lines @@
         'browser/ui/login/login_prompt_unittest.cc',
         'browser/ui/omnibox/omnibox_controller_unittest.cc',
         'browser/ui/omnibox/omnibox_edit_unittest.cc',
         'browser/ui/omnibox/omnibox_popup_model_unittest.cc',
         'browser/ui/omnibox/omnibox_view_unittest.cc',
         'browser/ui/panels/panel_mouse_watcher_unittest.cc',
         'browser/ui/passwords/manage_passwords_bubble_model_unittest.cc',
         'browser/ui/passwords/manage_passwords_icon_mock.cc',
         'browser/ui/passwords/manage_passwords_ui_controller_unittest.cc',
         'browser/ui/passwords/password_manager_presenter_unittest.cc',
+        'browser/ui/prefs_migrator_unittest.cc',
         'browser/ui/search/instant_page_unittest.cc',
         'browser/ui/search/instant_search_prerenderer_unittest.cc',
         'browser/ui/search/search_delegate_unittest.cc',
         'browser/ui/search/search_ipc_router_policy_unittest.cc',
         'browser/ui/search/search_ipc_router_unittest.cc',
         'browser/ui/search/search_model_unittest.cc',
         'browser/ui/search/search_tab_helper_unittest.cc',
         'browser/ui/search_engines/keyword_editor_controller_unittest.cc',
         'browser/ui/startup/session_crashed_infobar_delegate_unittest.cc',
         'browser/ui/sync/one_click_signin_helper_unittest.cc',
@@ skipping 1167 matching lines @@
               'dependencies': [
                 '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }