Revert "Build Observatory with runtime"

runtime/observatory/lib/service_io.dart

-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library service_io;
-
-import 'dart:async';
-import 'dart:io';
-import 'dart:typed_data';
-
-import 'package:logging/logging.dart';
-import 'package:observatory/service_common.dart';
-
-// Export the service library.
-export 'package:observatory/service_common.dart';
-
-class _IOWebSocket implements CommonWebSocket {
-  WebSocket _webSocket;
-  
-  void connect(String address,
-               void onOpen(),
-               void onMessage(dynamic data),
-               void onError(),
-               void onClose()) {
-    WebSocket.connect(address).then((WebSocket socket) {
-      _webSocket = socket;
-      _webSocket.listen(
-          onMessage,
-          onError: (dynamic) => onError(),
-          onDone: onClose,
-          cancelOnError: true);
-      onOpen();
-    }).catchError((e, st) {
-      onError();
-    });
-  }
-  
-  bool get isOpen =>
-      (_webSocket != null) && (_webSocket.readyState == WebSocket.OPEN);
-  
-  void send(dynamic data) {
-    _webSocket.add(data);
-  }
-  
-  void close() {
-    if (_webSocket != null) {
-      _webSocket.close();
-    }
-  }
-  
-  Future<ByteData> nonStringToByteData(dynamic data) {
-    assert(data is Uint8List);
-    Logger.root.info('Binary data size in bytes: ${data.lengthInBytes}');
-    return new Future.sync(() =>
-        new ByteData.view(data.buffer,
-                          data.offsetInBytes,
-                          data.lengthInBytes));
-  }
-}
-
-/// The [WebSocketVM] communicates with a Dart VM over WebSocket. The Dart VM
-/// can be embedded in Chromium or standalone. In the case of Chromium, we
-/// make the service requests via the Chrome Remote Debugging Protocol.
-class WebSocketVM extends CommonWebSocketVM {
-  WebSocketVM(WebSocketVMTarget target) : super(target, new _IOWebSocket());
-}