[Webkit-unassigned] [Bug 84393] Avoid calling updateCompositingLayers() more than once before each render

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=84393





--- Comment #11 from Simon Fraser (smfr) <simon.fraser at apple.com>  2012-11-29 21:28:46 PST ---
We can't just not update compositing layers, because otherwise GraphicsLayers will be left pointing at RenderLayerBackings which might have gone away.

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