Add missing file

sky/engine/bindings/internals.dart

+// Copyright 2015 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.
+
+library dart_ui_internals;
+
+// TODO(abarth): Move these functions into dart:ui
+
+int takeRootBundleHandle() native "takeRootBundleHandle";
+int takeServiceRegistry() native "takeServiceRegistry";
+int takeServicesProvidedByEmbedder() native "takeServicesProvidedByEmbedder";
+int takeServicesProvidedToEmbedder() native "takeServicesProvidedToEmbedder";
+int takeShellProxyHandle() native "takeShellProxyHandle";