Validate that ui::Event::time_stamp comes from the same clock as TimeTicks::Now

ui/message_center/message_center.gyp

 # 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 112 matching lines @@
         ['OS=="win"', {
           'dependencies': [
             '../aura/aura.gyp:aura',
           ],
         }],
         # On Mac, toolkit-views builds still use the Cocoa UI. Keep this in sync
         # with message_center_unittests below.
         ['toolkit_views==1 and OS!="mac"', {
           'dependencies': [
             '../events/events.gyp:events',
+            '../events/events.gyp:events_base',
             '../views/views.gyp:views',
             '../compositor/compositor.gyp:compositor',
           ],
         }, {
           'sources/': [
             ['exclude', 'views/'],
             ['exclude', '_views\\.(h|cc)$'],
           ],
         }],
         # iOS disables notifications altogether, Android implements its own
@@ skipping 122 matching lines @@
               'dependencies': [
                 '../../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }