Adds SecurityContext.setTrustedCertificatesBytes

tests/standalone/io/web_socket_error_test.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.
 //
 // VMOptions=
 // VMOptions=--short_socket_read
 // VMOptions=--short_socket_write
 // VMOptions=--short_socket_read --short_socket_write
 
 library dart.io;
@@ skipping 16 matching lines @@
 
 String localFile(path) => Platform.script.resolve(path).toFilePath();
 List<int> readLocalFile(path) => (new File(localFile(path))).readAsBytesSync();
 
 SecurityContext serverContext = new SecurityContext()
   ..useCertificateChainBytes(readLocalFile('certificates/server_chain.pem'))
   ..usePrivateKeyBytes(readLocalFile('certificates/server_key.pem'),
                          password: 'dartdart');
 
 SecurityContext clientContext = new SecurityContext()
-  ..setTrustedCertificates(file: localFile('certificates/trusted_certs.pem'));
+  ..setTrustedCertificatesBytes(
+      readLocalFile('certificates/trusted_certs.pem'));
 
 /**
  * A SecurityConfiguration lets us run the tests over HTTP or HTTPS.
  */
 class SecurityConfiguration {
   final bool secure;
 
   SecurityConfiguration({bool this.secure});
 
   Future<HttpServer> createServer({int backlog: 0}) =>
@@ skipping 54 matching lines @@
 
 
 main() {
   asyncStart();
   new SecurityConfiguration(secure: false).runTests();
   // TODO(whesse): WebSocket.connect needs an optional context: parameter
   // new SecurityConfiguration(secure: true).runTests();
   asyncEnd();
 }