anchor.diff:  
   /// Waits for Chrome to print DevTools URI and connects to it.
   Future<WipConnection> _connectToChromeDebugPort(io.Process chromeProcess, int port) async {
  -  chromeProcess.stdout
  -    .transform(utf8.decoder)
  -    .transform(const LineSplitter())
  -    .listen((String line) {
  -      print('[CHROME]: $line');
  -    });
  -
  -  await chromeProcess.stderr
  -    .transform(utf8.decoder)
  -    .transform(const LineSplitter())
  -    .map((String line) {
  -      print('[CHROME]: $line');
  -      return line;
  -    })
  -    .firstWhere((String line) => line.startsWith('DevTools listening'), orElse: () {
  -      throw Exception('Expected Chrome to print "DevTools listening" string '
  -          'with DevTools URL, but the string was never printed.');
  -    });
  -
     final Uri devtoolsUri = await _getRemoteDebuggerUrl(Uri.parse('http://localhost:$port'));
     print('Connecting to DevTools: $devtoolsUri');
     final ChromeConnection chromeConnection = ChromeConnection('localhost', port);
  
positive.code: 
    return jsonValue.toInt();
  }
  
negative.code:       '--disable-default-apps',
        '--disable-translate',
      ];
  
      final io.Process chromeProcess = await _spawnChromiumProcess(
        _findSystemChromeExecutable(),
        args,
        workingDirectory: workingDirectory,
  