Pass optional arguments to NullPointerException constructor.

frog/lib/natives.dart

 // Copyright (c) 2011, 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.
 
 // Native helpers generated by the compiler
 // TODO(jmesserly): more natives should use this pattern
 
 // Translate a JavaScript exception to a Dart exception
 // TODO(jmesserly): cross browser support. This is Chrome specific.
 _toDartException(e) native @"""
@@ skipping 14 matching lines @@
   }
   dartEx.stack = stack;
   return dartEx;
 }
 
 if (e instanceof TypeError) {
   switch(e.type) {
     case 'property_not_function':
     case 'called_non_callable':
       if (e.arguments[0] == null) {
-        return attachStack(new NullPointerException());
+        return attachStack(new NullPointerException(null, []));
       } else {
         return attachStack(new ObjectNotClosureException());
       }
       break;
     case 'non_object_property_call':
     case 'non_object_property_load':
-      return attachStack(new NullPointerException());
+      return attachStack(new NullPointerException(null, []));
       break;
     case 'undefined_method':
       var mname = e.arguments[0];
       if (typeof(mname) == 'string' && (mname.indexOf('call$') == 0
           || mname == 'call' || mname == 'apply')) {
         return attachStack(new ObjectNotClosureException());
       } else {
         // TODO(jmesserly): fix noSuchMethod on operators so we don't hit this
         return attachStack(new NoSuchMethodException('', e.arguments[0], []));
       }
       break;
   }
 } else if (e instanceof RangeError) {
   if (e.message.indexOf('call stack') >= 0) {
     return attachStack(new StackOverflowException());
   }
 }
 return e;""" {
   // Ensure constructors are generated
   new ObjectNotClosureException();
-  new NullPointerException();
+  new NullPointerException(null, null);
   new NoSuchMethodException(null, null, null);
   new StackOverflowException();
 }
 
 // TODO(jmesserly): we shouldn't be relying on the e.stack property.
 // Need to mangle it.
 _stackTraceOf(e) native @"return  (e && e.stack) ? e.stack : null;";