Rolls back fix of SecurityContext method names.

tests/standalone/io/secure_session_resume_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 tests TLS session resume, by making multiple client connections
 // on the same port to the same server, with a delay of 200 ms between them.
 // The unmodified secure_server_test creates all sessions simultaneously,
 // which means that no handshake completes and caches its keys in the session
 // cache in time for other connections to use it.
 //
@@ skipping 10 matching lines @@
 import "dart:isolate";
 
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 
 InternetAddress HOST;
 
 String localFile(path) => Platform.script.resolve(path).toFilePath();
 
 SecurityContext serverContext = new SecurityContext()
-  ..useCertificateChainSync(localFile('certificates/server_chain.pem'))
-  ..usePrivateKeySync(localFile('certificates/server_key.pem'),
-                      password: 'dartdart');
+  ..useCertificateChain(localFile('certificates/server_chain.pem'))
+  ..usePrivateKey(localFile('certificates/server_key.pem'),
+                  password: 'dartdart');
 
 SecurityContext clientContext = new SecurityContext()
-  ..setTrustedCertificatesSync(localFile('certificates/trusted_certs.pem'));
+  ..setTrustedCertificates(localFile('certificates/trusted_certs.pem'));
 
 Future<SecureServerSocket> startServer() {
   return SecureServerSocket.bind(HOST,
                                  0,
                                  serverContext).then((server) {
     server.listen((SecureSocket client) {
       client.fold(<int>[], (message, data) => message..addAll(data))
           .then((message) {
             String received = new String.fromCharCodes(message);
             Expect.isTrue(received.contains("Hello from client "));
@@ skipping 33 matching lines @@
   return startServer()
       .then((server) => Future.wait(
           ['able', 'baker', 'charlie', 'dozen', 'elapse']
           .map((name) {
             delay += delay_between_connections;
             return new Future.delayed(delay, () => server)
             .then((server) => testClient(server, name));
           })))
       .then((servers) => servers.first.close());
 }