[es6] Function constructor-created functions should be named "anonymous"

src/accessors.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/accessors.h"
 
 #include "src/api.h"
 #include "src/contexts.h"
 #include "src/deoptimizer.h"
 #include "src/execution.h"
@@ skipping 1056 matching lines @@
 //
 
 
 void Accessors::FunctionNameGetter(
     v8::Local<v8::Name> name,
     const v8::PropertyCallbackInfo<v8::Value>& info) {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
   HandleScope scope(isolate);
   Handle<JSFunction> function =
       Handle<JSFunction>::cast(Utils::OpenHandle(*info.Holder()));
-  Handle<Object> result(function->shared()->name(), isolate);
+  Handle<Object> result;
+  if (function->shared()->name_should_print_as_anonymous()) {
+    result = isolate->factory()->anonymous_string();
+  } else {
+    result = handle(function->shared()->name(), isolate);
+  }
   info.GetReturnValue().Set(Utils::ToLocal(result));
 }
 
 
 MUST_USE_RESULT static MaybeHandle<Object> SetFunctionName(
     Isolate* isolate, Handle<JSFunction> function, Handle<Object> value) {
   Handle<Object> old_value;
   bool is_observed = function->map()->is_observed();
   if (is_observed) {
     old_value = handle(function->shared()->name(), isolate);
@@ skipping 417 matching lines @@
   Handle<Object> getter = v8::FromCData(isolate, &ModuleGetExport);
   Handle<Object> setter = v8::FromCData(isolate, &ModuleSetExport);
   info->set_getter(*getter);
   if (!(attributes & ReadOnly)) info->set_setter(*setter);
   return info;
 }
 
 
 }  // namespace internal
 }  // namespace v8