Split ui/display types into separate module and have Ozone depend on it

ui/display/display_unittests.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.
 
 # TODO(dnicoara) Move this into its own executable. (Currently it is built as
 # part of ui_unittests.)
 {
   'dependencies': [
     '../base/base.gyp:test_support_base',
     '../testing/gtest.gyp:gtest',
     '../ui/display/display.gyp:display',
     '../ui/gfx/gfx.gyp:gfx_geometry',
   ],
   'sources': [
     'edid_parser_unittest.cc',
     'chromeos/display_configurator_unittest.cc',
     'chromeos/x11/display_util_x11_unittest.cc',
     'chromeos/x11/native_display_event_dispatcher_x11_unittest.cc',
     'display_util_unittest.cc',
   ],
   'conditions': [
     # TODO(dnicoara) When we add non-chromeos display code this dependency can
     # be added to the above list. For now, keep it here since Win & Android do
     # not like empty libraries.
     ['chromeos == 1', {
       'dependencies': [
         '../ui/display/display.gyp:display_test_util',
+        '../ui/display/display.gyp:display_types',
       ],
     }],
   ],
 }