[es6] Parameter scopes for sloppy eval

src/full-codegen/full-codegen.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/ast.h"
 #include "src/ast-numbering.h"
 #include "src/code-factory.h"
 #include "src/codegen.h"
 #include "src/compiler.h"
 #include "src/debug/debug.h"
@@ skipping 1530 matching lines @@
 FullCodeGenerator::EnterBlockScopeIfNeeded::EnterBlockScopeIfNeeded(
     FullCodeGenerator* codegen, Scope* scope, BailoutId entry_id,
     BailoutId declarations_id, BailoutId exit_id)
     : codegen_(codegen), exit_id_(exit_id) {
   saved_scope_ = codegen_->scope();
 
   if (scope == NULL) {
     codegen_->PrepareForBailoutForId(entry_id, NO_REGISTERS);
     needs_block_context_ = false;
   } else {
-    needs_block_context_ = scope->ContextLocalCount() > 0;
+    needs_block_context_ = scope->NeedsContext();
     codegen_->scope_ = scope;
     {
       if (needs_block_context_) {
         Comment cmnt(masm(), "[ Extend block context");
         __ Push(scope->GetScopeInfo(codegen->isolate()));
         codegen_->PushFunctionArgumentForContextAllocation();
         __ CallRuntime(Runtime::kPushBlockContext, 2);
 
         // Replace the context stored in the frame.
         codegen_->StoreToFrameField(StandardFrameConstants::kContextOffset,
@@ skipping 22 matching lines @@
   codegen_->PrepareForBailoutForId(exit_id_, NO_REGISTERS);
   codegen_->scope_ = saved_scope_;
 }
 
 
 #undef __
 
 
 }  // namespace internal
 }  // namespace v8