Adds SecurityContext.usePrivateKeyBytes

tests/standalone/io/security_context_argument_test.dart

 // Copyright (c) 2015, 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 "package:expect/expect.dart";
 import "dart:io";
 
 String localFile(path) => Platform.script.resolve(path).toFilePath();
+List<int> readLocalFile(path) => (new File(localFile(path))).readAsBytesSync();
 
 bool printException(e) { print(e); return true; }
 bool argumentError(e) => e is ArgumentError;
 bool argumentOrTypeError(e) => e is ArgumentError || e is TypeError;
+bool fileSystemException(e) => e is FileSystemException;
 bool tlsException(e) => e is TlsException;
 
 void testUsePrivateKeyArguments() {
     var c = new SecurityContext();
     c.useCertificateChain(localFile('certificates/server_chain.pem'));
-    Expect.throws(() => c.usePrivateKey(
-          localFile('certificates/server_key.pem'), password: "dart" * 1000),
+    Expect.throws(() => c.usePrivateKeyAsBytes(
+          readLocalFile('certificates/server_key.pem'),
+                        password: "dart" * 1000),
         argumentError);
-    Expect.throws(() => c.usePrivateKey(
-          localFile('certificates/server_key.pem')),
+    Expect.throws(() => c.usePrivateKeyAsBytes(
+          readLocalFile('certificates/server_key.pem')),
         tlsException);
-    Expect.throws(() => c.usePrivateKey(
-          localFile('certificates/server_key.pem'), password: "iHackSites"),
+    Expect.throws(() => c.usePrivateKeyAsBytes(
+          readLocalFile('certificates/server_key.pem'), password: "iHackSites"),
         tlsException);
-    Expect.throws(() => c.usePrivateKey(
-          localFile('certificates/server_key_oops.pem'), password: "dartdart"),
-        tlsException);
-    Expect.throws(() => c.usePrivateKey(1), argumentOrTypeError);
-    Expect.throws(() => c.usePrivateKey(null), argumentError);
-    Expect.throws(() => c.usePrivateKey(
-          localFile('certificates/server_key_oops.pem'), password: 3),
-        argumentOrTypeError);
-    c.usePrivateKey(
-        localFile('certificates/server_key.pem'), password: "dartdart");
-}    
+    Expect.throws(() => c.usePrivateKeyAsBytes(
+          readLocalFile('certificates/server_key_oops.pem'),
+                        password: "dartdart"),
+        fileSystemException);
+    Expect.throws(() => c.usePrivateKeyAsBytes(1), argumentOrTypeError);
+    Expect.throws(() => c.usePrivateKeyAsBytes(null), argumentError);
+    Expect.throws(() => c.usePrivateKeyAsBytes(
+          readLocalFile('certificates/server_key_oops.pem'), password: 3),
+        fileSystemException);
+    c.usePrivateKeyAsBytes(
+        readLocalFile('certificates/server_key.pem'), password: "dartdart");
+}
 
 void main() {
   testUsePrivateKeyArguments();
 }