Merge 89562 - 2011-06-23 Mikhail Naganov <mnaganov@chromium.org>

Source/WebCore/inspector/front-end/HeapSnapshot.js

 /*
  * Copyright (C) 2011 Google Inc. 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
@@ skipping 972 matching lines @@
 
     hasNext: function()
     {
         return this._position < this._iterationOrder.length;
     },
 
     get isEmpty()
     {
         if (this._iterationOrder)
             return !this._iterationOrder.length;
+        if (this._unfilteredIterationOrder && !this._filter)
+            return !this._unfilteredIterationOrder.length;
         var iterator = this._iterator;
-        if (!this._filter) {
+        if (!this._unfilteredIterationOrder && !this._filter) {
             iterator.first();
             return !iterator.hasNext();
+        } else if (!this._unfilteredIterationOrder) {
+            for (iterator.first(); iterator.hasNext(); iterator.next())
+                if (this._filter(iterator.item))
+                    return false;
+        } else {
+            var order = this._unfilteredIterationOrder.constructor === Array ?
+                this._unfilteredIterationOrder : this._unfilteredIterationOrder.slice(0);
+            for (var i = 0, l = order.length; i < l; ++i) {
+                iterator.index = order[i];
+                if (this._filter(iterator.item))
+                    return false;
+            }
         }
-        for (iterator.first(); iterator.hasNext(); iterator.next())
-            if (this._filter(iterator.item)) return false;
         return true;
     },
 
     get item()
     {
         this._iterator.index = this._iterationOrder[this._position];
         return this._iterator.item;
     },
 
     get length()
@@ skipping 405 matching lines @@
     pushBaseIds: function(baseIds)
     {
         this._baseIds = baseIds;
     },
 
     pushBaseSelfSizes: function(baseSelfSizes)
     {
         this._baseSelfSizes = baseSelfSizes;
     }
 };