Adds SecurityContext.setTrustedCertificatesBytes

tests/standalone/io/https_unauthorized_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.
 
 // This test verifies that secure connections that fail due to
 // unauthenticated certificates throw exceptions in HttpClient.
 
 import "package:expect/expect.dart";
 import "package:path/path.dart";
 import "dart:async";
 import "dart:io";
 
 const HOST_NAME = "localhost";
 const CERTIFICATE = "localhost_cert";
 
 String localFile(path) => Platform.script.resolve(path).toFilePath();
 List<int> readLocalFile(path) => (new File(localFile(path))).readAsBytesSync();
 
 SecurityContext untrustedServerContext = new SecurityContext()
   ..useCertificateChainBytes(readLocalFile(
       'certificates/untrusted_server_chain.pem'))
   ..usePrivateKeyBytes(readLocalFile('certificates/untrusted_server_key.pem'),
                          password: 'dartdart');
 
 SecurityContext clientContext = new SecurityContext()
-  ..setTrustedCertificates(file: localFile('certificates/trusted_certs.pem'));
+  ..setTrustedCertificatesBytes(
+      readLocalFile('certificates/trusted_certs.pem'));
 
 Future<SecureServerSocket> runServer() {
   return HttpServer.bindSecure(
       HOST_NAME, 0, untrustedServerContext, backlog: 5)
   .then((server) {
     server.listen((HttpRequest request) {
       request.listen((_) { }, onDone: () { request.response.close(); });
     }, onError: (e) { if (e is! HandshakeException) throw e; });
     return server;
   });
@@ skipping 17 matching lines @@
       }
     });
   }
 
   runServer().then((server) {
     clientProcess(server.port).then((_) {
       server.close();
     });
   });
 }