Temp hax.

vm/native_arguments.h

 // 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.
 
 #ifndef VM_NATIVE_ARGUMENTS_H_
 #define VM_NATIVE_ARGUMENTS_H_
 
 #include "platform/assert.h"
 #include "vm/globals.h"
 
@@ skipping 24 matching lines @@
  public:
   Isolate* isolate() const { return isolate_; }
   int Count() const { return argc_; }
 
   RawObject* At(int index) const {
     ASSERT(index >=0 && index < argc_);
     return (*argv_)[-index];
   }
 
   void SetReturn(const Object& value) const;
+  void SetReturn(RawObject* value) const;
 
   static intptr_t isolate_offset() {
     return OFFSET_OF(NativeArguments, isolate_);
   }
   static intptr_t argc_offset() { return OFFSET_OF(NativeArguments, argc_); }
   static intptr_t argv_offset() { return OFFSET_OF(NativeArguments, argv_); }
   static intptr_t retval_offset() {
     return OFFSET_OF(NativeArguments, retval_);
   }
 
  private:
   Isolate* isolate_;  // Current isolate pointer.
   int argc_;  // Number of arguments passed to the runtime call.
   RawObject*(*argv_)[];  // Pointer to an array of arguments to runtime call.
   RawObject** retval_;  // Pointer to the return value area.
 };
 
 }  // namespace dart
 
 #endif  // VM_NATIVE_ARGUMENTS_H_