Rolls back fix of SecurityContext method names.

tests/standalone/io/https_server_test.dart

Index: tests/standalone/io/https_server_test.dart
diff --git a/tests/standalone/io/https_server_test.dart b/tests/standalone/io/https_server_test.dart
index c0bce81af0d1a34bd92339e962aae1fe75fa5310..3f9bc523914df8a975946b6891c402c10ad21299 100644
--- a/tests/standalone/io/https_server_test.dart
+++ b/tests/standalone/io/https_server_test.dart
@@ -13,12 +13,12 @@ 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'));
 
 void testListenOn() {
   void test(void onDone()) {