[debugger] ScopeIterator should unwrap debug-evaluate contexts.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/allocation-site-scopes.h"
 #include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/conversions.h"
@@ skipping 1480 matching lines @@
 Handle<JSObject> Factory::NewJSObjectWithMemento(
     Handle<JSFunction> constructor,
     Handle<AllocationSite> site) {
   JSFunction::EnsureHasInitialMap(constructor);
   CALL_HEAP_FUNCTION(
       isolate(),
       isolate()->heap()->AllocateJSObject(*constructor, NOT_TENURED, *site),
       JSObject);
 }
 
+Handle<JSObject> Factory::NewJSObjectWithNullProto() {
+  Handle<JSObject> result = NewJSObject(isolate()->object_function());
+  Handle<Map> new_map =
+      Map::Copy(Handle<Map>(result->map()), "ObjectWithNullProto");
+  Map::SetPrototype(new_map, null_value());
+  JSObject::MigrateToMap(result, new_map);
+  return result;
+}
 
 Handle<JSModule> Factory::NewJSModule(Handle<Context> context,
                                       Handle<ScopeInfo> scope_info) {
   // Allocate a fresh map. Modules do not have a prototype.
   Handle<Map> map = NewMap(JS_MODULE_TYPE, JSModule::kSize);
   // Allocate the object based on the map.
   Handle<JSModule> module =
       Handle<JSModule>::cast(NewJSObjectFromMap(map, TENURED));
   module->set_context(*context);
   module->set_scope_info(*scope_info);
@@ skipping 860 matching lines @@
 }
 
 
 Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
 
 }  // namespace internal
 }  // namespace v8