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

ui/ozone/ozone.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,
     'external_ozone_platforms': [],
     'external_ozone_platform_files': [],
     'external_ozone_platform_deps': [],
@@ skipping 14 matching lines @@
         'OZONE_IMPLEMENTATION',
       ],
       'variables': {
         'platform_list_file': '<(SHARED_INTERMEDIATE_DIR)/ui/ozone/ozone_platform_list.cc',
         'ozone_platforms': [
           '<@(external_ozone_platforms)',
         ],
       },
       'sources': [
         '<(platform_list_file)',
+        # common/chromeos files are excluded automatically when building with
+        # chromeos=0, by exclusion rules in filename_rules.gypi due to the
+        # 'chromeos' folder name.
+        'common/chromeos/native_display_delegate_ozone.cc',
+        'common/chromeos/native_display_delegate_ozone.h',
         'ozone_platform.cc',
         'ozone_platform.h',
         'ozone_switches.cc',
         'ozone_switches.h',
         'platform/dri/ozone_platform_dri.cc',
         'platform/dri/ozone_platform_dri.h',
         'platform/dri/cursor_factory_evdev_dri.cc',
         'platform/dri/cursor_factory_evdev_dri.h',
         'platform/test/ozone_platform_test.cc',
         'platform/test/ozone_platform_test.h',
@@ skipping 40 matching lines @@
           'variables': {
             'ozone_platforms': [
               'test'
             ],
           }
         }, {  # ozone_platform_test==0
           'sources/': [
             ['exclude', '^platform/test/'],
           ]
         }],
+        ['chromeos==1', {
+          'dependencies': [
+            '<(DEPTH)/ui/display/display.gyp:display_types',
+          ],
+        }],
       ]
     },
   ],
 }