Simpler return value of HashTable::add/HashMap:add and others

Source/core/rendering/shapes/ShapeInfo.h

 /*
 * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above
 *    copyright notice, this list of conditions and the following
 *    disclaimer.
@@ skipping 31 matching lines @@
 
 template<class KeyType, class InfoType>
 class MappedInfo {
 public:
     static InfoType* ensureInfo(const KeyType* key)
     {
         InfoMap& infoMap = MappedInfo<KeyType, InfoType>::infoMap();
         if (InfoType* info = infoMap.get(key))
             return info;
         typename InfoMap::AddResult result = infoMap.add(key, InfoType::createInfo(key));
-        return result.iterator->value.get();
+        return result.storedValue->value.get();
     }
     static void removeInfo(const KeyType* key) { infoMap().remove(key); }
     static InfoType* info(const KeyType* key) { return infoMap().get(key); }
 private:
     typedef HashMap<const KeyType*, OwnPtr<InfoType> > InfoMap;
     static InfoMap& infoMap()
     {
         DEFINE_STATIC_LOCAL(InfoMap, staticInfoMap, ());
         return staticInfoMap;
     }
@@ skipping 108 matching lines @@
 
 private:
     mutable OwnPtr<Shape> m_shape;
     LayoutSize m_shapeLogicalSize;
 };
 
 bool checkShapeImageOrigin(Document&, ImageResource&);
 
 }
 #endif