Remove redudant deleted_count argument from EnqueueSpliceRecord

src/object-observe.js

 // 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 276 matching lines @@
   if (!IS_UNDEFINED(objectInfo))
     BeginPerformChange(objectInfo, 'splice');
 }
 
 function EndPerformSplice(array) {
   var objectInfo = objectInfoMap.get(array);
   if (!IS_UNDEFINED(objectInfo))
     EndPerformChange(objectInfo, 'splice');
 }
 
-function EnqueueSpliceRecord(array, index, removed, deleteCount, addedCount) {
+function EnqueueSpliceRecord(array, index, removed, addedCount) {
   var objectInfo = objectInfoMap.get(array);
   if (IS_UNDEFINED(objectInfo) || objectInfo.changeObservers.length === 0)
     return;
 
   var changeRecord = {
     type: 'splice',
     object: array,
     index: index,
     removed: removed,
     addedCount: addedCount
   };
 
-  changeRecord.removed.length = deleteCount;
   ObjectFreeze(changeRecord);
   ObjectFreeze(changeRecord.removed);
   EnqueueChangeRecord(changeRecord, objectInfo.changeObservers);
 }
 
 function NotifyChange(type, object, name, oldValue) {
   var objectInfo = objectInfoMap.get(object);
   if (objectInfo.changeObservers.length === 0)
     return;
 
@@ skipping 126 matching lines @@
     "observe", ArrayObserve,
     "unobserve", ArrayUnobserve
   ));
   InstallFunctions(notifierPrototype, DONT_ENUM, $Array(
     "notify", ObjectNotifierNotify,
     "performChange", ObjectNotifierPerformChange
   ));
 }
 
 SetupObjectObserve();