Adds SecurityContext.usePrivateKeyBytes

tests/standalone/io/https_client_certificate_test.dart

Index: tests/standalone/io/https_client_certificate_test.dart
diff --git a/tests/standalone/io/https_client_certificate_test.dart b/tests/standalone/io/https_client_certificate_test.dart
index 24d397848d4010b518e1eba0593422e45e91dfc6..ceee76bcab5e920266df80ade15235229d2ac550 100644
--- a/tests/standalone/io/https_client_certificate_test.dart
+++ b/tests/standalone/io/https_client_certificate_test.dart
@@ -11,19 +11,20 @@ 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()
   ..useCertificateChain(localFile('certificates/server_chain.pem'))
-  ..usePrivateKey(localFile('certificates/server_key.pem'),
-                  password: 'dartdart');
+  ..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'))
 // TODO: Set a client certificate here.
   ..useCertificateChain(localFile('certificates/server_chain.pem'))
-  ..usePrivateKey(localFile('certificates/server_key.pem'),
-                  password: 'dartdart');
+  ..usePrivateKeyBytes(readLocalFile('certificates/server_key.pem'),
+                       password: 'dartdart');
 
 void main() {
   asyncStart();