[Webkit-unassigned] [Bug 106502] Don't drop to huge tile mode if we're only slow-scrolling because of a page overlay

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106502





--- Comment #3 from Anders Carlsson <andersca at apple.com>  2013-01-09 16:45:57 PST ---
(From update of attachment 182012)
View in context: https://bugs.webkit.org/attachment.cgi?id=182012&action=review

> Source/WebCore/rendering/RenderLayerBacking.cpp:204
> -            if (scrollingCoordinator->shouldUpdateScrollLayerPositionOnMainThread())
> +            if (scrollingCoordinator->mainThreadScrollingReasons() & ~ScrollingCoordinator::ForcedOnMainThread)

I think you should explain what this does with a comment.

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