Pass undefined to JS builtins when called with implicit receiver.

src/objects-inl.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 3291 matching lines @@
 }
 
 
 void SharedFunctionInfo::set_strict_mode(bool value) {
   set_compiler_hints(BooleanBit::set(compiler_hints(),
                                      kStrictModeFunction,
                                      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));
 }
 
 
 ACCESSORS(CodeCache, default_cache, FixedArray, kDefaultCacheOffset)
 ACCESSORS(CodeCache, normal_type_cache, Object, kNormalTypeCacheOffset)
 
 bool Script::HasValidSource() {
   Object* src = this->source();
   if (!src->IsString()) return true;
@@ skipping 984 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_