static v8::Handle<v8::Value> webkitSetResourceTimingBufferSizeCallback(const v8::Arguments& args)
{
    if (args.Length() < 1)
        return throwNotEnoughArgumentsError(args.GetIsolate());
    Performance* imp = V8Performance::toNative(args.Holder());
    V8TRYCATCH(unsigned, maxSize, toUInt32(MAYBE_MISSING_PARAMETER(args, 0, DefaultIsUndefined)));
    imp->webkitSetResourceTimingBufferSize(maxSize);
    return v8Undefined();
}