Desugar %DefaultConstructorCallSuper partially in parser.

src/full-codegen/x64/full-codegen-x64.cc

Index: src/full-codegen/x64/full-codegen-x64.cc
diff --git a/src/full-codegen/x64/full-codegen-x64.cc b/src/full-codegen/x64/full-codegen-x64.cc
index 4437627bf6350195dac1eacbe048b65caad7c623..b4b7a8dfe2e4ec2da917efae42dbe3f67eaa28ea 100644
--- a/src/full-codegen/x64/full-codegen-x64.cc
+++ b/src/full-codegen/x64/full-codegen-x64.cc
@@ -4008,13 +4008,9 @@ void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK(args->length() == 2);
 
-  // new.target
+  // Evaluate new.target and super constructor.
   VisitForStackValue(args->at(0));
-
-  // .this_function
   VisitForStackValue(args->at(1));
-  __ CallRuntime(Runtime::kGetPrototype, 1);
-  __ Push(result_register());
 
   // Load original constructor into rcx.
   __ movp(rcx, Operand(rsp, 1 * kPointerSize));