Desugar %DefaultConstructorCallSuper partially in parser.

src/runtime/runtime-classes.cc

Index: src/runtime/runtime-classes.cc
diff --git a/src/runtime/runtime-classes.cc b/src/runtime/runtime-classes.cc
index 6678cdd6f5ed8b535c1515769234512670dae76c..5f098148664ff86253602185809b89e27becb2a0 100644
--- a/src/runtime/runtime-classes.cc
+++ b/src/runtime/runtime-classes.cc
@@ -517,16 +517,9 @@ RUNTIME_FUNCTION(Runtime_DefaultConstructorCallSuper) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, original_constructor, 0);
-  CONVERT_ARG_HANDLE_CHECKED(JSFunction, actual_constructor, 1);
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, super_constructor, 1);
   JavaScriptFrameIterator it(isolate);
 
-  // Prepare the callee to the super call. The super constructor is stored as
-  // the prototype of the constructor we are currently executing.
-  Handle<Object> super_constructor;
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, super_constructor,
-      Runtime::GetPrototype(isolate, actual_constructor));
-
   // Determine the actual arguments passed to the function.
   int argument_count = 0;
   base::SmartArrayPointer<Handle<Object>> arguments =