Support for super keyed loads where key is a name.

src/runtime/runtime.h

Index: src/runtime/runtime.h
diff --git a/src/runtime/runtime.h b/src/runtime/runtime.h
index 9fb4c1118bb4266086f0ba8abf04dda609ca2046..e1bc926e28cefce721e56dec773425844281ad87 100644
--- a/src/runtime/runtime.h
+++ b/src/runtime/runtime.h
@@ -190,6 +190,7 @@ namespace internal {
   F(ThrowNonMethodError, 0, 1)                             \
   F(ThrowUnsupportedSuperError, 0, 1)                      \
   F(LoadFromSuper, 3, 1)                                   \
+  F(LoadKeyedFromSuper, 3, 1)                              \
   F(StoreToSuper_Strict, 4, 1)                             \
   F(StoreToSuper_Sloppy, 4, 1)
 
@@ -852,6 +853,9 @@ class Runtime : public AllStatic {
   MUST_USE_RESULT static MaybeHandle<Object> GetObjectProperty(
       Isolate* isolate, Handle<Object> object, Handle<Object> key);
 
+  MUST_USE_RESULT static MaybeHandle<Name> ToName(Isolate* isolate,
+                                                  Handle<Object> key);
+
   static void SetupArrayBuffer(Isolate* isolate,
                                Handle<JSArrayBuffer> array_buffer,
                                bool is_external, void* data,