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simon.fraser@apple.com authored
https://bugs.webkit.org/show_bug.cgi?id=119551 Reviewed by Dean Jackson. Only re-parent the flattening layer if we had to update our layer configuration (reparenting is necessary then to get the correct sibling ordering), or if it was parented in some other layer. This avoid unnecessary flushing of state to CA. * rendering/RenderLayerBacking.cpp: (WebCore::RenderLayerBacking::updateGraphicsLayerConfiguration): git-svn-id: http://svn.webkit.org/repository/webkit/trunk@154018 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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