Rename original constructor to new target

src/runtime/runtime-classes.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include <stdlib.h>
 #include <limits>
 
 #include "src/arguments.h"
@@ skipping 478 matching lines @@
   Debug* debug = isolate->debug();
   // Handle stepping into constructors if step into is active.
   if (debug->StepInActive()) debug->HandleStepIn(function, true);
   return *isolate->factory()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_DefaultConstructorCallSuper) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 2);
-  CONVERT_ARG_HANDLE_CHECKED(JSFunction, original_constructor, 0);
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, new_target, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, super_constructor, 1);
   JavaScriptFrameIterator it(isolate);
 
   // Determine the actual arguments passed to the function.
   int argument_count = 0;
   base::SmartArrayPointer<Handle<Object>> arguments =
       Runtime::GetCallerArguments(isolate, 0, &argument_count);
 
   Handle<Object> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result,
-      Execution::New(isolate, super_constructor, original_constructor,
-                     argument_count, arguments.get()));
+      isolate, result, Execution::New(isolate, super_constructor, new_target,
+                                      argument_count, arguments.get()));
 
   return *result;
 }
 
 }  // namespace internal
 }  // namespace v8