Avoid backing store allocation with some combinations of replaced elements, masking and visibility:hidden
Created attachment 237396 [details] Patch
Comment on attachment 237396 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=237396&action=review > LayoutTests/compositing/backing/replaced-child-no-backing.html:49 > +<pre id="layers">Layer tree goes here in DRT</pre> indent.
http://trac.webkit.org/changeset/173184
<rdar://problem/18210378>