MacViews: Add WidgetEventGenerator to abstract platform-specific event generation for tests.

ui/events/events.gyp

 # Copyright 2013 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 219 matching lines @@
       'type': 'static_library',
       'dependencies': [
         '<(DEPTH)/skia/skia.gyp:skia',
         'events',
         'events_base',
         'platform/events_platform.gyp:events_platform',
       ],
       'sources': [
         'test/cocoa_test_event_utils.h',
         'test/cocoa_test_event_utils.mm',
+        'test/event_generator.cc',
+        'test/event_generator.h',
         'test/events_test_utils.cc',
         'test/events_test_utils.h',
         'test/events_test_utils_x11.cc',
         'test/events_test_utils_x11.h',
         'test/mock_motion_event.cc',
         'test/mock_motion_event.h',
         'test/platform_event_waiter.cc',
         'test/platform_event_waiter.h',
         'test/test_event_handler.cc',
         'test/test_event_handler.h',
@@ skipping 99 matching lines @@
           ],
           'variables': {
             'test_suite_name': 'events_unittests',
           },
           'includes': [ '../../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }