Add test for power_menu_button.

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' : {
     'browser_tests_sources_views_specific': [
       'browser/extensions/browser_action_test_util_views.cc',
       'browser/views/browser_actions_container_unittest.cc',
     ],
@@ skipping 1312 matching lines @@
           'dependencies': [
             '../views/views.gyp:views',
           ],
           'sources': [
             '<@(browser_tests_sources_views_specific)',
           ],
         }],
         ['OS=="linux" and chromeos==1', {
           'sources': [
             'browser/chromeos/status/clock_menu_button_browsertest.cc',
+            'browser/chromeos/status/power_menu_button_browsertest.cc',
           ],
         }],
         ['OS=="linux" and toolkit_views==0 and chromeos==0', {
           'sources': [
             'browser/extensions/browser_action_test_util_gtk.cc',
             'browser/gtk/view_id_util_browsertest.cc',
           ],
         }],
         ['OS=="mac"', {
           'sources': [
@@ skipping 821 matching lines @@
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }
 
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