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simon.fraser@apple.com authored
Reviewed by Dan Bernstein. iframes in compositing layers don't redraw correctly on scrolling https://bugs.webkit.org/show_bug.cgi?id=39096 When an iframe ends up in a compositing layer (that is painting to its backing store), we need to turn off blitting on scrolling. RenderView::paintBoxDecorations() already has code to do this for transformed frames, so do the same thing when the frame is enclosed in a compositing layer. Test: compositing/iframes/iframe-copy-on-scroll.html * rendering/RenderView.cpp: (WebCore::RenderView::paintBoxDecorations): git-svn-id: http://svn.webkit.org/repository/webkit/trunk@59443 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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