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

Source/bindings/v8/DOMWrapperWorld.cpp

 /*
  * Copyright (C) 2009 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 109 matching lines @@
     isolatedWorldCount--;
     ASSERT(map.size() == isolatedWorldCount);
 }
 
 PassRefPtr<DOMWrapperWorld> DOMWrapperWorld::ensureIsolatedWorld(int worldId, int extensionGroup)
 {
     ASSERT(isIsolatedWorldId(worldId));
 
     WorldMap& map = isolatedWorldMap();
     WorldMap::AddResult result = map.add(worldId, 0);
-    RefPtr<DOMWrapperWorld> world = result.iterator->value;
+    RefPtr<DOMWrapperWorld> world = result.storedValue->value;
     if (world) {
         ASSERT(world->worldId() == worldId);
         ASSERT(world->extensionGroup() == extensionGroup);
         return world.release();
     }
 
     world = DOMWrapperWorld::create(worldId, extensionGroup);
-    result.iterator->value = world.get();
+    result.storedValue->value = world.get();
     isolatedWorldCount++;
     ASSERT(map.size() == isolatedWorldCount);
 
     return world.release();
 }
 
 v8::Handle<v8::Context> DOMWrapperWorld::context(ScriptController& controller)
 {
     return controller.windowShell(this)->context();
 }
@@ skipping 79 matching lines @@
     DOMActivityLoggerMap::iterator it = loggers.find(worldId);
     return it == loggers.end() ? 0 : it->value.get();
 }
 
 bool DOMWrapperWorld::contextHasCorrectPrototype(v8::Handle<v8::Context> context)
 {
     return V8WindowShell::contextHasCorrectPrototype(context);
 }
 
 } // namespace WebCore