[webkit-dev] ScrollableArea::scrollSize() vs ScrollableArea::maximumScrollPosition()

[Xianzhu Wang]

Hi,

ScrollableArea::scrollSize() and ScrollableArea::maximumScrollPosition()
seem to return the same value if the parameters of the scrollbars are
updated. Can we remove one of them?

I think the benefits are:
- no redundancy;
- ScrollableArea could be independent on scrollbars;
- maximumScrollPosition() is more up-to-date without the need of
updateScrollbars;
- the ambiguity of the name scrollSize (e.g. RenderLayer::m_scrollSize and
RenderLayer::scrollSize() are totally different things) can be eliminated

What do you think? Am I missing anything?

Xianzhu
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