ScrollingCoordinator::coordinatesScrollingForFrameView should be conditional on compositing being active
Created attachment 127995 [details]
Comment on attachment 127995 [details]
View in context: https://bugs.webkit.org/attachment.cgi?id=127995&action=review
> + setScrollLayer(scrollLayerForFrameView(frameView));
> - setScrollLayer(scrollLayerForFrameView(frameView));
This change isn't mentioned in the change log; why is it needed?
That slipped into this patch by accident. The idea is to initialize the scroll layer before anything else because in Chromium we're buffering properties on the layer, not on a separate data structure. This raises an interesting question about what happens when calls are made in a different order - for example, if something calls frameViewWheelEventHandlerCountChanged() before frameViewRootLayerDidChange() should it behave the same as if the calls were made in the reverse order or not? Today in the mac implementation it seems that this would vary depending on whether the sync timer fires or not between the calls, although with the way the callsites are coded I don't think it makes a difference.
Committed r108392: <http://trac.webkit.org/changeset/108392>