Get rid of the NONEXISTENT PropertyType

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 161 matching lines @@
 
 
 // A copy of the PropertyType enum from property-details.h
 var PropertyType = {};
 PropertyType.Normal                  = 0;
 PropertyType.Field                   = 1;
 PropertyType.Constant                = 2;
 PropertyType.Callbacks               = 3;
 PropertyType.Handler                 = 4;
 PropertyType.Interceptor             = 5;
-PropertyType.Nonexistent             = 6;
 
 
 // Different attributes for a property.
 var PropertyAttribute = {};
 PropertyAttribute.None       = NONE;
 PropertyAttribute.ReadOnly   = READ_ONLY;
 PropertyAttribute.DontEnum   = DONT_ENUM;
 PropertyAttribute.DontDelete = DONT_DELETE;
 
 
@@ skipping 2686 matching lines @@
   }
   if (!NUMBER_IS_FINITE(value)) {
     if (value > 0) {
       return 'Infinity';
     } else {
       return '-Infinity';
     }
   }
   return value;
 }