Rationalize Dart mojo and sky package structure

sky/framework/editing/keyboard.dart

Index: sky/framework/editing/keyboard.dart
diff --git a/sky/framework/editing/keyboard.dart b/sky/framework/editing/keyboard.dart
deleted file mode 100644
index cf0e0ab5de4c3959a902546dff8b8ec0a71b5645..0000000000000000000000000000000000000000
--- a/sky/framework/editing/keyboard.dart
+++ /dev/null
@@ -1,20 +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 '../shell.dart' as shell;
-import 'package:mojom/keyboard/keyboard.mojom.dart';
-
-class _KeyboardConnection {
-  KeyboardServiceProxy proxy;
-
-  _KeyboardConnection() {
-    proxy = new KeyboardServiceProxy.unbound();
-    shell.requestService("mojo:keyboard", proxy);
-  }
-
-  KeyboardService get keyboard => proxy.ptr;
-}
-
-final _KeyboardConnection _connection = new _KeyboardConnection();
-final KeyboardService keyboard = _connection.keyboard;