Changed Object.keys to return strings for element indices.

src/factory.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 655 matching lines @@
   return result;
 }
 
 
 Handle<SharedFunctionInfo> Factory::NewSharedFunctionInfo(Handle<String> name) {
   CALL_HEAP_FUNCTION(Heap::AllocateSharedFunctionInfo(*name),
                      SharedFunctionInfo);
 }
 
 
+Handle<String> Factory::NumberToString(Handle<Object> number) {
+  CALL_HEAP_FUNCTION(Heap::NumberToString(*number), String);
+}
+
+
 Handle<NumberDictionary> Factory::DictionaryAtNumberPut(
     Handle<NumberDictionary> dictionary,
     uint32_t key,
     Handle<Object> value) {
   CALL_HEAP_FUNCTION(dictionary->AtNumberPut(key, *value), NumberDictionary);
 }
 
 
 Handle<JSFunction> Factory::NewFunctionHelper(Handle<String> name,
                                               Handle<Object> prototype) {
@@ skipping 243 matching lines @@
     Execution::ConfigureInstance(instance,
                                  instance_template,
                                  pending_exception);
   } else {
     *pending_exception = false;
   }
 }
 
 
 } }  // namespace v8::internal