[es6] implement Object.assign

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 052d9f627fdb75949ed1f523b9fb3abf437f12d2..36ce09aed70afe7235aefb64ca0257be891bc519 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1591,6 +1591,7 @@ EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_tostring)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_templates)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_sloppy)
 EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_unicode)
+EMPTY_NATIVE_FUNCTIONS_FOR_FEATURE(harmony_object)
 
 
 void Genesis::InstallNativeFunctions_harmony_proxies() {
@@ -1620,6 +1621,7 @@ EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_proxies)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_templates)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_sloppy)
 EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_unicode)
+EMPTY_INITIALIZE_GLOBAL_FOR_FEATURE(harmony_object)
 
 void Genesis::InitializeGlobal_harmony_regexps() {
   Handle<JSObject> builtins(native_context()->builtins());
@@ -2179,6 +2181,8 @@ bool Genesis::InstallExperimentalNatives() {
       "native harmony-templates.js", NULL};
   static const char* harmony_sloppy_natives[] = {NULL};
   static const char* harmony_unicode_natives[] = {NULL};
+  static const char* harmony_object_natives[] = {"native harmony-object.js",
+                                                 NULL};
 
   for (int i = ExperimentalNatives::GetDebuggerCount();
        i < ExperimentalNatives::GetBuiltinsCount(); i++) {