[Ozone-Test] Add proper cursor factory implementation

ui/ozone/platform/test/test.gypi

 # Copyright 2014 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': {
     'internal_ozone_platform_deps': [
       'ozone_platform_test',
     ],
     'internal_ozone_platforms': [
@@ skipping 11 matching lines @@
         '../../base/base.gyp:base',
         '../events/events.gyp:events',
         '../events/ozone/events_ozone.gyp:events_ozone_evdev',
         '../gfx/gfx.gyp:gfx',
       ],
       'sources': [
         'file_surface_factory.cc',
         'file_surface_factory.h',
         'ozone_platform_test.cc',
         'ozone_platform_test.h',
+        'test_cursor_factory.cc',
+        'test_cursor_factory.h',
       ],
     },
   ],
 }