Removed PropertyDetails::IsProperty.

src/property-details.h

 // Copyright 2012 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 101 matching lines @@
     ASSERT(attributes == this->attributes());
     ASSERT(index == this->index());
   }
 
   // Conversion for storing details as Object*.
   explicit inline PropertyDetails(Smi* smi);
   inline Smi* AsSmi();
 
   PropertyType type() { return TypeField::decode(value_); }
 
-  bool IsProperty() {
-    return IsRealProperty(type());
-  }
-
   PropertyAttributes attributes() { return AttributesField::decode(value_); }
 
   int index() { return StorageField::decode(value_); }
 
   inline PropertyDetails AsDeleted();
 
   static bool IsValidIndex(int index) {
     return StorageField::is_valid(index);
   }
 
@@ skipping 11 matching lines @@
 
   static const int kInitialIndex = 1;
 
  private:
   uint32_t value_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PROPERTY_DETAILS_H_