Move the wire protocol support into the public API

pkg/analysis_server/lib/src/channel/byte_stream_channel.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 channel.byte_stream;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:analysis_server/plugin/protocol/protocol.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/channel/channel.dart';
-import 'package:analysis_server/src/protocol.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 
 /**
  * Instances of the class [ByteStreamClientChannel] implement a
  * [ClientCommunicationChannel] that uses a stream and a sink (typically,
  * standard input and standard output) to communicate with servers.
  */
 class ByteStreamClientChannel implements ClientCommunicationChannel {
   final Stream input;
   final IOSink output;
@@ skipping 74 matching lines @@
     if (!_closeRequested) {
       _closeRequested = true;
       assert(!_closed.isCompleted);
       _closed.complete();
     }
   }
 
   @override
   void listen(void onRequest(Request request),
       {Function onError, void onDone()}) {
-    _input
-        .transform(const Utf8Decoder())
-        .transform(new LineSplitter())
-        .listen((String data) => _readRequest(data, onRequest),
-            onError: onError, onDone: () {
+    _input.transform(const Utf8Decoder()).transform(new LineSplitter()).listen(
+        (String data) => _readRequest(data, onRequest),
+        onError: onError, onDone: () {
       close();
       onDone();
     });
   }
 
   @override
   void sendNotification(Notification notification) {
     // Don't send any further notifications after the communication channel is
     // closed.
     if (_closeRequested) {
@@ skipping 42 matching lines @@
       // structure as a request.
       Request request = new Request.fromString(data);
       if (request == null) {
         sendResponse(new Response.invalidRequestFormat());
         return;
       }
       onRequest(request);
     });
   }
 }