events: Add some test.

ui/ui.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,
   },
   'includes': [
     'ui_resources.gypi',
@@ skipping 168 matching lines @@
         'base/dragdrop/os_exchange_data.h',
         'base/dragdrop/os_exchange_data_provider_aura.cc',
         'base/dragdrop/os_exchange_data_provider_aura.h',
         'base/dragdrop/os_exchange_data_provider_gtk.cc',
         'base/dragdrop/os_exchange_data_provider_gtk.h',
         'base/dragdrop/os_exchange_data_provider_win.cc',
         'base/dragdrop/os_exchange_data_provider_win.h',
         'base/events/event.cc',
         'base/events/event.h',
         'base/events/event_constants.h',
+        'base/events/event_dispatcher.cc',
         'base/events/event_dispatcher.h',
         'base/events/event_handler.h',
         'base/events/event_target.cc',
         'base/events/event_target.h',
         'base/gestures/gesture_configuration.cc',
         'base/gestures/gesture_configuration.h',
         'base/gestures/gesture_point.cc',
         'base/gestures/gesture_point.h',
         'base/gestures/gesture_recognizer.h',
         'base/gestures/gesture_recognizer_impl.cc',
@@ skipping 583 matching lines @@
     },
   ],
   'conditions': [
     ['inside_chromium_build == 1', {
       'includes': [
         'ui_unittests.gypi',
       ]},
     ],
   ],
 }