assert that we're not putting the same object twice into a dom wrapper map

Source/bindings/v8/DOMWrapperMap.h

 /*
  * Copyright (C) 2012 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 52 matching lines @@
     }
 
     bool containsKey(KeyType* key)
     {
         return m_map.Contains(key);
     }
 
     void set(KeyType* key, v8::Handle<v8::Object> wrapper, const WrapperConfiguration& configuration)
     {
         ASSERT(static_cast<KeyType*>(toNative(wrapper)) == key);
-        ASSERT(!containsKey(key));
+        RELEASE_ASSERT(!containsKey(key)); // See crbug.com/368095
         v8::UniquePersistent<v8::Object> unique(m_isolate, wrapper);
         configuration.configureWrapper(&unique);
         m_map.Set(key, unique.Pass());
     }
 
     void clear()
     {
         m_map.Clear();
     }
 
@@ skipping 76 matching lines @@
     v8::UniquePersistent<v8::Object> value,
     void* key)
 {
     RELEASE_ASSERT(!value.IsEmpty()); // See crbug.com/368095.
     releaseObject(v8::Local<v8::Object>::New(isolate, value));
 }
 
 } // namespace WebCore
 
 #endif // DOMWrapperMap_h