Revert of Revert of [es6] Parsing of new.target

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 348c6b61ab2f4b3da1de8ff7f077f61f52ce98b8..87640490ee8682f31f58b0e5f5814955b9989013 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -110,7 +110,8 @@
   FunctionState top_state(&function_state_, &scope_, top_scope, kNormalFunction,
                           &top_factory);
   scope_->SetLanguageMode(language_mode);
-  Scope* function_scope = NewScope(scope_, FUNCTION_SCOPE, kind);
+  Scope* function_scope = NewScope(
+      scope_, IsArrowFunction(kind) ? ARROW_SCOPE : FUNCTION_SCOPE, kind);
   PreParserFactory function_factory(NULL);
   FunctionState function_state(&function_state_, &scope_, function_scope, kind,
                                &function_factory);