StopLoadingSheetCallback(nsHashKey* aKey, void* aData, void* aClosure)
StopLoadingSheetCallback(nsIURI* aKey, SheetLoadData*& aData, void* aClosure)
StopLoadingSheetCallback(nsHashKey* aKey, void* aData, void* aClosure){  NS_PRECONDITION(aData, "Must have a data!");  NS_PRECONDITION(aClosure, "Must have a loader");  SheetLoadData* data = NS_STATIC_CAST(SheetLoadData*, aData);  CSSLoaderImpl* loader = NS_STATIC_CAST(CSSLoaderImpl*, aClosure);  data->mIsLoading = PR_FALSE; // we will handle the removal right here  data->mIsCancelled = PR_TRUE;    loader->SheetComplete(data, PR_FALSE);  return kHashEnumerateRemove;}