Fixed comment and simplified the related code a bit.

src/ic.cc

 // 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 1305 matching lines @@
 
 
 static bool LookupForWrite(Handle<JSObject> receiver,
                            Handle<String> name,
                            LookupResult* lookup) {
   receiver->LocalLookup(*name, lookup);
   if (!lookup->IsFound()) {
     receiver->map()->LookupTransition(*receiver, *name, lookup);
   }
   if (!StoreICableLookup(lookup)) {
-    // 2nd chance: There can be accessors somewhere in the prototype chain. Note
-    // that we explicitly exclude native accessors for now, because the stubs
-    // are not yet prepared for this scenario.
+    // 2nd chance: There can be accessors somewhere in the prototype chain.
     receiver->Lookup(*name, lookup);
-    if (!lookup->IsPropertyCallbacks()) {
-      return false;
-    }
-    Handle<Object> callback(lookup->GetCallbackObject());
-    return StoreICableLookup(lookup);
+    return lookup->IsPropertyCallbacks() && StoreICableLookup(lookup);
   }
 
   if (lookup->IsInterceptor() &&
       receiver->GetNamedInterceptor()->setter()->IsUndefined()) {
     receiver->LocalLookupRealNamedProperty(*name, lookup);
     return StoreICableLookup(lookup);
   }
 
   return true;
 }
@@ skipping 1355 matching lines @@
 #undef ADDR
 };
 
 
 Address IC::AddressFromUtilityId(IC::UtilityId id) {
   return IC_utilities[id];
 }
 
 
 } }  // namespace v8::internal