Cleanup isolate library after frog removal.

lib/isolate/isolate_compiler.dart

Index: lib/isolate/isolate_compiler.dart
diff --git a/lib/isolate/isolate_compiler.dart b/lib/isolate/isolate_compiler.dart
index 434bbbdd3f428271d8e12f3395c2f5c18ad8eecf..61438ed4fae43f7cf41bc70037a56818ecaf6a1d 100644
--- a/lib/isolate/isolate_compiler.dart
+++ b/lib/isolate/isolate_compiler.dart
@@ -1,4 +1,4 @@
-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, 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.
 
@@ -28,7 +28,6 @@ class _IsolateNatives {
 }
 
 class _ReceivePortFactory {
-
   factory ReceivePort() {
     throw new NotImplementedException();
   }