[wip] ozonex: X11 backend for ozone.

ui/platform_window/x11/x11_window.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,
+    'use_x11': 1,
+  },
+  'targets': [
+    {
+      'target_name': 'x11_window',
+      'type': 'static_library',
+      'dependencies': [
+        '../../../base/base.gyp:base',
+        '../../../skia/skia.gyp:skia',
+        '../../events/x/events_x11.gyp:events_x11',
+        '../../gfx/x/gfx_x11.gyp:gfx_x11',
+      ],
+      'link_settings': {
+        'libraries': [
+          '-lX11',
+          '-lXi',
+        ],
+      },
+      'sources': [
+        'x11_window.cc',
+      ],
+    },
+  ],
+}