Add Proces owner of socket and fix printing of non-network sockets

runtime/bin/process_patch.dart

 // Copyright (c) 2013, 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.
 
 patch class _WindowsCodePageDecoder {
   /* patch */ static String _decodeBytes(List<int> bytes)
       native "SystemEncodingToString";
 }
 
 
@@ skipping 212 matching lines @@
         assert(value is String);
         // Do not override keys already set as part of environment.
         if (!environment.containsKey(key)) {
           _environment.add('$key=$value');
         }
       });
     }
 
     // stdin going to process.
     _stdin = new _StdSink(new _Socket._writePipe());
+    _stdin._sink._owner = this;
     // stdout coming from process.
     _stdout = new _StdStream(new _Socket._readPipe());
+    _stdout._stream._owner = this;
     // stderr coming from process.
     _stderr = new _StdStream(new _Socket._readPipe());
+    _stderr._stream._owner = this;
     _exitHandler = new _Socket._readPipe();
     _ended = false;
     _started = false;
   }
 
   String get _serviceTypePath => 'io/processes';
   String get _serviceTypeName => 'Process';
 
   Map _toJSON(bool ref) {
     var r = {
       'id': _servicePath,
       'type': _serviceType(ref),
       'name': '$_path',
       'user_name': '$_path',
       'pid': '$pid',
       'arguments': _arguments.join(' '),
     };
     if (ref) {
       return r;
     }
     r['started'] = _started;
     r['ended'] = _ended;
     r['path'] = _path;
     r['environment'] = _environment;
     r['workingDirectory'] = _workingDirectory == null ? '.' : _workingDirectory;
+    if (_stdin._sink._nativeSocket.owner != null) {
+      r['stdin'] = _stdin._sink._nativeSocket._toJSON(true);
+    }
+    if (_stdout._stream._nativeSocket.owner != null) {
+      r['stdout'] = _stdout._stream._nativeSocket._toJSON(true);
+    }
+    if (_stderr._stream._nativeSocket.owner != null) {
+      r['stderr'] = _stderr._stream._nativeSocket._toJSON(true);
+    }
     return r;
   }
 
   static String _getShellCommand() {
     if (Platform.isWindows) {
       return 'cmd.exe';
     }
     return '/bin/sh';
   }
 
@@ skipping 305 matching lines @@
   const _ProcessResult(int this.pid,
                        int this.exitCode,
                        this.stdout,
                        this.stderr);
 
   final int pid;
   final int exitCode;
   final stdout;
   final stderr;
 }