Per bug 1227927 comment 7, mats suggested file a follow-up bug to investigate a loop inside nsCSSFrameConstructor::InsertFirstLineFrames() should do something. Then I realize that the function is no-op, and the code inside the "#if 0" does not even build. We should investigate whether the function is worth keeping or not.
In theory something like this is needed for fixing bug 8253. In practice, simply adding a comment at the current callsite where we do AppendFirstLineFrames about how there used to be an insert thing but it never worked and the comment is there in case people need to find it in history should be just as good as what we have right now, I think.
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