Pass undefined to JS builtins when called with implicit receiver.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index c8fcd02c5d04bcdc4c4d3806f717b85fa22f8906..22af01e8bc3f4366b8d74adc617ed018012aacbc 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -3309,14 +3309,14 @@ void SharedFunctionInfo::set_strict_mode(bool value) {
 }
 
 
-bool SharedFunctionInfo::es5_native() {
-  return BooleanBit::get(compiler_hints(), kES5Native);
+bool SharedFunctionInfo::native() {
+  return BooleanBit::get(compiler_hints(), kNative);
 }
 
 
-void SharedFunctionInfo::set_es5_native(bool value) {
+void SharedFunctionInfo::set_native(bool value) {
   set_compiler_hints(BooleanBit::set(compiler_hints(),
-                                     kES5Native,
+                                     kNative,
                                      value));
 }