Don't reflect ES2015 Function name inference in Function.prototype.toString

src/ast/ast.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/ast.h"
 
 #include <cmath>  // For isfinite.
 
 #include "src/ast/prettyprinter.h"
 #include "src/ast/scopes.h"
@@ skipping 257 matching lines @@
     kind_ = PROTOTYPE;
   } else if (value_->AsMaterializedLiteral() != NULL) {
     kind_ = MATERIALIZED_LITERAL;
   } else if (value_->IsLiteral()) {
     kind_ = CONSTANT;
   } else {
     kind_ = COMPUTED;
   }
 }
 
+bool ObjectLiteralProperty::NeedsSetFunctionName() const {
+  return is_computed_name_ &&
+         (value_->IsAnonymousFunctionDefinition() ||
+          (value_->IsFunctionLiteral() &&
+           IsConciseMethod(value_->AsFunctionLiteral()->kind())));
+}
 
 void ClassLiteral::AssignFeedbackVectorSlots(Isolate* isolate,
                                              FeedbackVectorSpec* spec,
                                              FeedbackVectorSlotCache* cache) {
   // This logic that computes the number of slots needed for vector store
   // ICs must mirror FullCodeGenerator::VisitClassLiteral.
   prototype_slot_ = spec->AddLoadICSlot();
   if (NeedsProxySlot()) {
     proxy_slot_ = spec->AddStoreICSlot();
   }
@@ skipping 550 matching lines @@
 bool Literal::Match(void* literal1, void* literal2) {
   const AstValue* x = static_cast<Literal*>(literal1)->raw_value();
   const AstValue* y = static_cast<Literal*>(literal2)->raw_value();
   return (x->IsString() && y->IsString() && x->AsString() == y->AsString()) ||
          (x->IsNumber() && y->IsNumber() && x->AsNumber() == y->AsNumber());
 }
 
 
 }  // namespace internal
 }  // namespace v8