Get rid of the NONEXISTENT PropertyType

src/property-details.h

 // 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.
 
 #ifndef V8_PROPERTY_DETAILS_H_
 #define V8_PROPERTY_DETAILS_H_
 
 #include "include/v8.h"
 #include "src/allocation.h"
 #include "src/utils.h"
@@ skipping 28 matching lines @@
 struct ZoneTypeConfig;
 typedef TypeImpl<ZoneTypeConfig> Type;
 class TypeInfo;
 
 // Type of properties.
 // Order of properties is significant.
 // Must fit in the BitField PropertyDetails::TypeField.
 // A copy of this is in mirror-debugger.js.
 enum PropertyType {
   // Only in slow mode.
-  NORMAL                    = 0,
+  NORMAL = 0,
   // Only in fast mode.
-  FIELD                     = 1,
-  CONSTANT                  = 2,
-  CALLBACKS                 = 3,
+  FIELD = 1,
+  CONSTANT = 2,
+  CALLBACKS = 3,
   // Only in lookup results, not in descriptors.
-  HANDLER                   = 4,
-  INTERCEPTOR               = 5,
-  // Only used as a marker in LookupResult.
-  NONEXISTENT               = 6
+  HANDLER = 4,
+  INTERCEPTOR = 5
 };
 
 
 class Representation {
  public:
   enum Kind {
     kNone,
     kInteger8,
     kUInteger8,
     kInteger16,
@@ skipping 229 matching lines @@
   PropertyDetails(int value, PropertyAttributes attributes) {
     value_ = AttributesField::update(value, attributes);
   }
 
   uint32_t value_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PROPERTY_DETAILS_H_