Consolidated property counting methods a bit.

src/objects.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 1789 matching lines @@
   void LocalLookupRealNamedProperty(String* name, LookupResult* result);
   void LookupRealNamedProperty(String* name, LookupResult* result);
   void LookupRealNamedPropertyInPrototypes(String* name, LookupResult* result);
   void LookupCallbackSetterInPrototypes(String* name, LookupResult* result);
   MUST_USE_RESULT MaybeObject* SetElementWithCallbackSetterInPrototypes(
       uint32_t index, Object* value, bool* found, StrictModeFlag strict_mode);
   void LookupCallback(String* name, LookupResult* result);
 
   // Returns the number of properties on this object filtering out properties
   // with the specified attributes (ignoring interceptors).
-  int NumberOfLocalProperties(PropertyAttributes filter);
-  // Returns the number of enumerable properties (ignoring interceptors).
-  int NumberOfEnumProperties();
+  int NumberOfLocalProperties(PropertyAttributes filter = NONE);
   // Fill in details for properties into storage starting at the specified
   // index.
   void GetLocalPropertyNames(FixedArray* storage, int index);
 
   // Returns the number of properties on this object filtering out properties
   // with the specified attributes (ignoring interceptors).
   int NumberOfLocalElements(PropertyAttributes filter);
   // Returns the number of enumerable elements (ignoring interceptors).
   int NumberOfEnumElements();
   // Returns the number of elements on this object filtering out elements
@@ skipping 2808 matching lines @@
   // Returns a copy of the map, with all transitions dropped from the
   // instance descriptors.
   MUST_USE_RESULT MaybeObject* CopyDropTransitions();
 
   // Returns the property index for name (only valid for FAST MODE).
   int PropertyIndexFor(String* name);
 
   // Returns the next free property index (only valid for FAST MODE).
   int NextFreePropertyIndex();
 
-  // Returns the number of properties described in instance_descriptors.
-  int NumberOfDescribedProperties();
+  // Returns the number of properties described in instance_descriptors
+  // filtering out properties with the specified attributes.
+  int NumberOfDescribedProperties(PropertyAttributes filter = NONE);
 
   // Casting.
   static inline Map* cast(Object* obj);
 
   // Locate an accessor in the instance descriptor.
   AccessorDescriptor* FindAccessor(String* name);
 
   // Code cache operations.
 
   // Clears the code cache.
@@ skipping 3593 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_