[es6] Perform the IsConstructor test in GetSuperConstructor.

src/compiler/ast-graph-builder.cc

Index: src/compiler/ast-graph-builder.cc
diff --git a/src/compiler/ast-graph-builder.cc b/src/compiler/ast-graph-builder.cc
index 161a33a10d4ac8663c2e57e81b99a737b8468cfc..5bf2339da616be5f0cb010e29ef94ee81ddc801e 100644
--- a/src/compiler/ast-graph-builder.cc
+++ b/src/compiler/ast-graph-builder.cc
@@ -2472,9 +2472,8 @@ void AstGraphBuilder::VisitCallSuper(Call* expr) {
   // Prepare the callee to the super call.
   VisitForValue(super->this_function_var());
   Node* this_function = environment()->Pop();
-  const Operator* op =
-      javascript()->CallRuntime(Runtime::kInlineGetSuperConstructor, 1);
-  Node* super_function = NewNode(op, this_function);
+  Node* super_function =
+      NewNode(javascript()->GetSuperConstructor(), this_function);
   environment()->Push(super_function);
 
   // Evaluate all arguments to the super call.