Rationalize Dart mojo and sky package structure

mojo/public/dart/lib/io.dart

Index: mojo/public/dart/lib/io.dart
diff --git a/mojo/public/dart/lib/io.dart b/mojo/public/dart/lib/io.dart
new file mode 100644
index 0000000000000000000000000000000000000000..bb8e64dcdeede6814001f5bd0ce58054a3fcf5fe
--- /dev/null
+++ b/mojo/public/dart/lib/io.dart
@@ -0,0 +1,49 @@
+// 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.io;
+
+import 'dart:async';
+import 'dart:collection' show HashMap,
+                              HashSet,
+                              Queue,
+                              ListQueue,
+                              LinkedList,
+                              LinkedListEntry,
+                              UnmodifiableMapView;
+import 'dart:convert';
+import 'dart:isolate';
+import 'dart:math';
+import 'dart:typed_data';
+
+
+part '../../../../dart/sdk/lib/io/bytes_builder.dart';
+part '../../../../dart/sdk/lib/io/common.dart';
+part '../../../../dart/sdk/lib/io/crypto.dart';
+part '../../../../dart/sdk/lib/io/data_transformer.dart';
+part '../../../../dart/sdk/lib/io/directory.dart';
+part '../../../../dart/sdk/lib/io/directory_impl.dart';
+part '../../../../dart/sdk/lib/io/file.dart';
+part '../../../../dart/sdk/lib/io/file_impl.dart';
+part '../../../../dart/sdk/lib/io/file_system_entity.dart';
+part '../../../../dart/sdk/lib/io/http.dart';
+part '../../../../dart/sdk/lib/io/http_date.dart';
+part '../../../../dart/sdk/lib/io/http_headers.dart';
+part '../../../../dart/sdk/lib/io/http_impl.dart';
+part '../../../../dart/sdk/lib/io/http_parser.dart';
+part '../../../../dart/sdk/lib/io/http_session.dart';
+part '../../../../dart/sdk/lib/io/io_sink.dart';
+part '../../../../dart/sdk/lib/io/io_service.dart';
+part '../../../../dart/sdk/lib/io/link.dart';
+part '../../../../dart/sdk/lib/io/platform.dart';
+part '../../../../dart/sdk/lib/io/platform_impl.dart';
+part '../../../../dart/sdk/lib/io/process.dart';
+part '../../../../dart/sdk/lib/io/service_object.dart';
+part '../../../../dart/sdk/lib/io/socket.dart';
+part '../../../../dart/sdk/lib/io/stdio.dart';
+part '../../../../dart/sdk/lib/io/string_transformer.dart';
+part '../../../../dart/sdk/lib/io/secure_socket.dart';
+part '../../../../dart/sdk/lib/io/secure_server_socket.dart';
+part '../../../../dart/sdk/lib/io/websocket.dart';
+part '../../../../dart/sdk/lib/io/websocket_impl.dart';