Rationalize Dart mojo and sky package structure

sky/framework/shell.dart

Index: sky/framework/shell.dart
diff --git a/sky/framework/shell.dart b/sky/framework/shell.dart
deleted file mode 100644
index b5a9ea2bf1a915dd4fc8b33480e3145e41a0cb03..0000000000000000000000000000000000000000
--- a/sky/framework/shell.dart
+++ /dev/null
@@ -1,25 +0,0 @@
-// 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.
-
-import "dart:sky.internals" as internals;
-import "embedder.dart";
-import "package:mojo/public/dart/application.dart";
-import 'package:mojo/public/dart/core.dart' as core;
-import "package:mojom/mojo/service_provider.mojom.dart";
-
-ApplicationConnection _initConnection() {
-  int rawHandle = internals.takeServicesProvidedByEmbedder();
-  core.MojoHandle proxyHandle = new core.MojoHandle(rawHandle);
-  ServiceProviderProxy serviceProvider = null;
-  if (proxyHandle.isValid) serviceProvider =
-      new ServiceProviderProxy.fromHandle(proxyHandle);
-  return new ApplicationConnection(null, serviceProvider);
-}
-
-final ApplicationConnection _connection = _initConnection();
-
-void requestService(String url, Object proxy) {
-  if (embedder.shell == null) _connection.requestService(proxy);
-  else embedder.connectToService(url, proxy);
-}