kAllowNativesSyntax 6030 src/parser.cc      parsing_flags |= kAllowNativesSyntax;
kAllowNativesSyntax  145 src/preparser.h     bool allow_natives_syntax = (flags & i::kAllowNativesSyntax) != 0;
kAllowNativesSyntax  265 test/cctest/test-parsing.cc     int flags = i::kAllowLazy | i::kAllowNativesSyntax;