Mirror object properties are always names

src/mirror-debugger.js

 // Copyright 2006-2012 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.
 
 // Handle id counters.
 var next_handle_ = 0;
 var next_transient_handle_ = -1;
 
 // Mirror cache.
 var mirror_cache_ = [];
@@ skipping 779 matching lines @@
  * Return the internal properties for this object as an array of
  * InternalPropertyMirror objects.
  * @return {Array} Property mirrors for this object
  */
 ObjectMirror.prototype.internalProperties = function() {
   return ObjectMirror.GetInternalProperties(this.value_);
 }
 
 
 ObjectMirror.prototype.property = function(name) {
-  var details = %DebugGetPropertyDetails(this.value_, %ToString(name));
+  var details = %DebugGetPropertyDetails(this.value_, %ToName(name));
   if (details) {
     return new PropertyMirror(this, name, details);
   }
 
   // Nothing found.
   return GetUndefinedMirror();
 };
 
 
 
@@ skipping 2068 matching lines @@
   }
   if (!NUMBER_IS_FINITE(value)) {
     if (value > 0) {
       return 'Infinity';
     } else {
       return '-Infinity';
     }
   }
   return value;
 }