Also use the redirecting name in stubs for native methods.

lib/compiler/implementation/native_handler.dart

 // 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.
 
 #library('native');
 #import('dart:uri');
 #import('leg.dart');
 #import('elements/elements.dart');
 #import('scanner/scannerlib.dart');
 #import('ssa/ssa.dart');
@@ skipping 223 matching lines @@
   String nativeMethodName = element.name.slowToString();
   if (!node.arguments.isEmpty()) {
     if (!node.arguments.tail.isEmpty()) {
       builder.compiler.cancel('More than one argument to native');
     }
     LiteralString jsCode = node.arguments.head;
     String str = jsCode.dartString.slowToString();
     if (nativeRedirectionRegExp.hasMatch(str)) {
       nativeMethodName = str;
       isRedirecting = true;
+      nativeEmitter.addRedirectingMethod(element, nativeMethodName);
     } else {
       hasBody = true;
     }
   }
 
   if (!hasBody) {
     nativeEmitter.nativeMethods.add(element);
   }
 
   FunctionSignature parameters = element.computeSignature(builder.compiler);
@@ skipping 92 matching lines @@
                                       String parameters) {
   buffer.add("  if (Object.getPrototypeOf(this).hasOwnProperty");
   buffer.add("('$methodName')) {\n");
   buffer.add("  $code");
   buffer.add("  } else {\n");
   buffer.add("    return Object.prototype.$methodName.call(this");
   buffer.add(parameters == '' ? '' : ', $parameters');
   buffer.add(");\n");
   buffer.add("  }\n");
 }