[Ozone] Add Ozone EGL demo

ui/ozone/demo/ozone_demos.gyp

 # 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': {
+    'chromium_code': 1,
+  },
   'targets': [
     {
-      'target_name': 'file_poller',
+      'target_name': 'ozone_egl_demo',
       'type': 'executable',
       'dependencies': [
         '../../../base/base.gyp:base',
+        '../../../ui/gfx/gfx.gyp:gfx_geometry',
+        '../../../ui/gl/gl.gyp:gl',
+        '../../../ui/ozone/ozone.gyp:ozone',
+        '../../../ui/ozone/ozone.gyp:ozone_base',
       ],
       'sources': [
-        'file_poller.cc',
+        'egl_demo.cc',
       ],
     },
   ],
 }