Set a max limit on extension items' labels in context menus....

chrome/chrome_tests.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.
 
 {
   'variables' : {
     'pyautolib_sources': [
       'app/chrome_dll_resource.h',
       'common/pref_names.cc',
       'common/pref_names.h',
@@ skipping 1561 matching lines @@
         'browser/extensions/extension_metrics_apitest.cc',
         'browser/extensions/extension_omnibox_apitest.cc',
         'browser/extensions/extension_override_apitest.cc',
         'browser/extensions/extension_popup_apitest.cc',
         'browser/extensions/extension_processes_apitest.cc',
         'browser/extensions/extension_rlz_apitest.cc',
         'browser/extensions/extension_shelf_model_browsertest.cc',
         'browser/extensions/extension_startup_browsertest.cc',
         'browser/extensions/extension_storage_apitest.cc',
         'browser/extensions/extension_tabs_apitest.cc',
+        'browser/extensions/extension_test_message_listener.cc',
+        'browser/extensions/extension_test_message_listener.h',
         'browser/extensions/extension_toolbar_model_browsertest.cc',
         'browser/extensions/extension_toolstrip_apitest.cc',
         'browser/extensions/extension_websocket_apitest.cc',
         'browser/extensions/fragment_navigation_apitest.cc',
         'browser/extensions/isolated_world_apitest.cc',
         'browser/extensions/notifications_apitest.cc',
         'browser/extensions/page_action_apitest.cc',
         'browser/extensions/permissions_apitest.cc',
         'browser/extensions/stubs_apitest.cc',
         'browser/find_bar_host_browsertest.cc',
@@ skipping 1149 matching lines @@
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }
 
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 # tab-width:2
 # indent-tabs-mode:nil
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