Adds SecurityContext.setTrustedCertificatesBytes

tests/standalone/io/https_client_certificate_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.
 
 import "dart:async";
 import "dart:io";
 
 import "package:async_helper/async_helper.dart";
 import "package:expect/expect.dart";
 import "package:path/path.dart";
 
 const HOST_NAME = "localhost";
 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');
 // TODO: Specify which client certificate roots to trust.
 
 SecurityContext clientContext = new SecurityContext()
-  ..setTrustedCertificates(file: localFile('certificates/trusted_certs.pem'))
+  ..setTrustedCertificatesBytes(
+      readLocalFile('certificates/trusted_certs.pem'))
 // TODO: Set a client certificate here.
   ..useCertificateChainBytes(readLocalFile('certificates/server_chain.pem'))
   ..usePrivateKeyBytes(readLocalFile('certificates/server_key.pem'),
                          password: 'dartdart');
 
 void main() {
   asyncStart();
   HttpServer.bindSecure(HOST_NAME,
                         0,
                         serverContext,
@@ skipping 17 matching lines @@
         })
         .then((message) {
           String received = new String.fromCharCodes(message);
           Expect.equals(received, "Hello");
           client.close();
           server.close();
           asyncEnd();
         });
   });
 }