Update ObjectToString to Harmony-draft algorithm

src/bootstrapper.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/bootstrapper.h"
 
 #include "src/accessors.h"
 #include "src/code-stubs.h"
 #include "src/extensions/externalize-string-extension.h"
 #include "src/extensions/free-buffer-extension.h"
@@ skipping 1582 matching lines @@
 
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_scoping)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_modules)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_strings)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_arrays)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_classes)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_object_literals)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_regexps)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_arrow_functions)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_numeric_literals)
+EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_tostring)
 
 
 void Genesis::InstallNativeFunctions_harmony_proxies() {
   if (FLAG_harmony_proxies) {
     INSTALL_NATIVE(JSFunction, "DerivedHasTrap", derived_has_trap);
     INSTALL_NATIVE(JSFunction, "DerivedGetTrap", derived_get_trap);
     INSTALL_NATIVE(JSFunction, "DerivedSetTrap", derived_set_trap);
     INSTALL_NATIVE(JSFunction, "ProxyEnumerate", proxy_enumerate);
   }
 }
 
 #undef INSTALL_NATIVE
 
 #define EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(id) \
   void Genesis::InitializeGlobal_##id() {}
 
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_scoping)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_modules)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_strings)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_arrays)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_classes)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_object_literals)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_arrow_functions)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_numeric_literals)
+EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_tostring)
 
 void Genesis::InitializeGlobal_harmony_regexps() {
   Handle<JSObject> builtins(native_context()->builtins());
 
   Handle<HeapObject> flag(FLAG_harmony_regexps ? heap()->true_value()
                                                : heap()->false_value());
   PropertyAttributes attributes =
       static_cast<PropertyAttributes>(DONT_DELETE | READ_ONLY);
   Runtime::DefineObjectProperty(builtins, factory()->harmony_regexps_string(),
                                 flag, attributes).Assert();
@@ skipping 520 matching lines @@
   static const char* harmony_strings_natives[] = {"native harmony-string.js",
                                                   NULL};
   static const char* harmony_classes_natives[] = {"native harmony-classes.js",
                                                   NULL};
   static const char* harmony_modules_natives[] = {NULL};
   static const char* harmony_scoping_natives[] = {NULL};
   static const char* harmony_object_literals_natives[] = {NULL};
   static const char* harmony_regexps_natives[] = {NULL};
   static const char* harmony_arrow_functions_natives[] = {NULL};
   static const char* harmony_numeric_literals_natives[] = {NULL};
+  static const char* harmony_tostring_natives[] = {"native harmony-tostring.js",
+                                                   NULL};
 
   for (int i = ExperimentalNatives::GetDebuggerCount();
        i < ExperimentalNatives::GetBuiltinsCount(); i++) {
 #define INSTALL_EXPERIMENTAL_NATIVES(id, desc)                       \
   if (FLAG_##id) {                                                   \
     for (size_t j = 0; id##_natives[j] != NULL; j++) {               \
       if (strcmp(ExperimentalNatives::GetScriptName(i).start(),      \
                  id##_natives[j]) == 0) {                            \
         if (!CompileExperimentalBuiltin(isolate(), i)) return false; \
       }                                                              \
@@ skipping 635 matching lines @@
   return from + sizeof(NestingCounterType);
 }
 
 
 // Called when the top-level V8 mutex is destroyed.
 void Bootstrapper::FreeThreadResources() {
   DCHECK(!IsActive());
 }
 
 } }  // namespace v8::internal