Adds SecurityContext.usePrivateKeyBytes

tests/standalone/io/secure_multiple_client_server_test.dart

Index: tests/standalone/io/secure_multiple_client_server_test.dart
diff --git a/tests/standalone/io/secure_multiple_client_server_test.dart b/tests/standalone/io/secure_multiple_client_server_test.dart
index 586105d4a7425f24baaa8c8696355d9149b6b02e..e57423957bda8e503545a0415d1d2923e1bc3ed1 100644
--- a/tests/standalone/io/secure_multiple_client_server_test.dart
+++ b/tests/standalone/io/secure_multiple_client_server_test.dart
@@ -17,11 +17,12 @@ InternetAddress HOST;
 SecureServerSocket SERVER;
 
 String localFile(path) => Platform.script.resolve(path).toFilePath();
+List<int> readLocalFile(path) => (new File(localFile(path))).readAsBytesSync();
 
 SecurityContext serverContext = new SecurityContext()
   ..useCertificateChain(localFile('certificates/server_chain.pem'))
-  ..usePrivateKey(localFile('certificates/server_key.pem'),
-                  password: 'dartdart');
+  ..usePrivateKeyBytes(readLocalFile('certificates/server_key.pem'),
+                       password: 'dartdart');
 
 SecurityContext clientContext = new SecurityContext()
   ..setTrustedCertificates(file: localFile('certificates/trusted_certs.pem'));