Pass undefined to JS builtins when called with implicit receiver.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 56b7a90372a99f53b5b7156e91d06b26658fe9c9..3e8c0198bc6f20de0f707a2d2e9e0ee96332e425 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -4120,10 +4120,10 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_SetProperty) {
 }
 
 
-// Set the ES5 native flag on the function.
+// Set the native flag on the function.
 // This is used to decide if we should transform null and undefined
 // into the global object when doing call and apply.
-RUNTIME_FUNCTION(MaybeObject*, Runtime_SetES5Flag) {
+RUNTIME_FUNCTION(MaybeObject*, Runtime_SetNativeFlag) {
   NoHandleAllocation ha;
   RUNTIME_ASSERT(args.length() == 1);
 
@@ -4131,7 +4131,7 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_SetES5Flag) {
 
   if (object->IsJSFunction()) {
     JSFunction* func = JSFunction::cast(*object);
-    func->shared()->set_es5_native(true);
+    func->shared()->set_native(true);
   }
   return isolate->heap()->undefined_value();
 }