ozone: Create a separate small gfx_ozone target.

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': [],
     'internal_ozone_platforms': [],
     'internal_ozone_platform_deps': [],
   },
   'targets': [
     {
       'target_name': 'ozone',
       'type': '<(component)',
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/ui/events/events.gyp:events',
         '<(DEPTH)/ui/gfx/gfx.gyp:gfx',
         '<(DEPTH)/ui/gfx/gfx.gyp:gfx_geometry',
+        '<(DEPTH)/ui/gfx/ozone/gfx_ozone.gyp:gfx_ozone',
         '<(DEPTH)/skia/skia.gyp:skia',
         '<@(external_ozone_platform_deps)',
         '<@(internal_ozone_platform_deps)',
       ],
       'defines': [
         'OZONE_IMPLEMENTATION',
       ],
       'variables': {
         'platform_list_file': '<(SHARED_INTERMEDIATE_DIR)/ui/ozone/ozone_platform_list.cc',
         'ozone_platforms': [
@@ skipping 63 matching lines @@
         'platform/dri/dri.gypi',
       ],
     }],
     ['<(ozone_platform_test) == 1', {
       'includes': [
         'platform/test/test.gypi',
       ],
     }],
   ],
 }