Revert change 1509 that flush ICs when adding setters on an object or...

src/objects.h

 // Copyright 2006-2008 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 1182 matching lines @@
 
   // Retrieve interceptors.
   InterceptorInfo* GetNamedInterceptor();
   InterceptorInfo* GetIndexedInterceptor();
 
   inline PropertyAttributes GetPropertyAttribute(String* name);
   PropertyAttributes GetPropertyAttributeWithReceiver(JSObject* receiver,
                                                       String* name);
   PropertyAttributes GetLocalPropertyAttribute(String* name);
 
-  // Defines an accessor.  This may violate some of the assumptions we
-  // make when setting up ics so unless it is guaranteed that no ics
-  // exist for this property we have to clear all ics.  Set the 'never_used'
-  // flag to true if you know there can be no ics.
   Object* DefineAccessor(String* name, bool is_getter, JSFunction* fun,
-                         PropertyAttributes attributes, bool never_used);
-
+                         PropertyAttributes attributes);
   Object* LookupAccessor(String* name, bool is_getter);
 
   // Used from Object::GetProperty().
   Object* GetPropertyWithFailedAccessCheck(Object* receiver,
                                            LookupResult* result,
                                            String* name,
                                            PropertyAttributes* attributes);
   Object* GetPropertyWithInterceptor(JSObject* receiver,
                                      String* name,
                                      PropertyAttributes* attributes);
@@ skipping 51 matching lines @@
   Object* GetElementWithReceiver(JSObject* receiver, uint32_t index);
 
   void SetFastElements(FixedArray* elements);
   Object* SetSlowElements(Object* length);
 
   // Lookup interceptors are used for handling properties controlled by host
   // objects.
   inline bool HasNamedInterceptor();
   inline bool HasIndexedInterceptor();
 
-  bool HasLocalPropertyWithType(PropertyType type);
-
   // Support functions for v8 api (needed for correct interceptor behavior).
   bool HasRealNamedProperty(String* key);
   bool HasRealElementProperty(uint32_t index);
   bool HasRealNamedCallbackProperty(String* key);
 
   // Initializes the array to a certain length
   Object* SetElementsLength(Object* length);
 
   // Get the header size for a JSObject.  Used to compute the index of
   // internal fields as well as the number of internal fields.
@@ skipping 3015 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_