Revert of Stage sloppy let

src/parser.cc

 // Copyright 2012 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/parser.h"
 
 #include "src/api.h"
 #include "src/ast.h"
 #include "src/ast-literal-reindexer.h"
 #include "src/bailout-reason.h"
@@ skipping 3576 matching lines @@
         if (num_decl != 1) {
           const char* loop_type =
               mode == ForEachStatement::ITERATE ? "for-of" : "for-in";
           ParserTraits::ReportMessageAt(
               parsing_result.bindings_loc,
               MessageTemplate::kForInOfLoopMultiBindings, loop_type);
           *ok = false;
           return nullptr;
         }
         if (parsing_result.first_initializer_loc.IsValid() &&
-            (is_strict(language_mode()) || mode == ForEachStatement::ITERATE ||
-             IsLexicalVariableMode(parsing_result.descriptor.mode))) {
+            (is_strict(language_mode()) || mode == ForEachStatement::ITERATE)) {
           if (mode == ForEachStatement::ITERATE) {
             ReportMessageAt(parsing_result.first_initializer_loc,
                             MessageTemplate::kForOfLoopInitializer);
           } else {
             // TODO(caitp): This should be an error in sloppy mode too.
             ReportMessageAt(parsing_result.first_initializer_loc,
                             MessageTemplate::kForInLoopInitializer);
           }
           *ok = false;
           return nullptr;
@@ skipping 2505 matching lines @@
 
 Expression* Parser::SpreadCallNew(Expression* function,
                                   ZoneList<v8::internal::Expression*>* args,
                                   int pos) {
   args->InsertAt(0, function, zone());
 
   return factory()->NewCallRuntime(Context::REFLECT_CONSTRUCT_INDEX, args, pos);
 }
 }  // namespace internal
 }  // namespace v8