Revert of [es6] Super call in arrows and eval

src/variables.h

Index: src/variables.h
diff --git a/src/variables.h b/src/variables.h
index 0cb50c87e985580c1fd1c7fc5ea9b3fde63f4206..384a8859545045ac502c5f80cc7a8229ddd81d75 100644
--- a/src/variables.h
+++ b/src/variables.h
@@ -20,7 +20,7 @@
 
 class Variable: public ZoneObject {
  public:
-  enum Kind { NORMAL, FUNCTION, CLASS, THIS, ARGUMENTS };
+  enum Kind { NORMAL, FUNCTION, CLASS, THIS, NEW_TARGET, ARGUMENTS };
 
   enum Location {
     // Before and during variable allocation, a variable whose location is
@@ -103,6 +103,7 @@
   bool is_function() const { return kind_ == FUNCTION; }
   bool is_class() const { return kind_ == CLASS; }
   bool is_this() const { return kind_ == THIS; }
+  bool is_new_target() const { return kind_ == NEW_TARGET; }
   bool is_arguments() const { return kind_ == ARGUMENTS; }
 
   ClassVariable* AsClassVariable() {