Reimplement background blending to match the change in the CSS Blending and Compositing spec. From https://dvcs.w3.org/hg/FXTF/rawfile/tip/compositing/index.html#mix-blend-mode: "Each background image must blend with the element's background images that are below it and the element's background color. Background image must not blend with the content that is behind the element."
Created attachment 201935 [details] Patch
Comment on attachment 201935 [details] Patch Clearing flags on attachment: 201935 Committed r150503: <http://trac.webkit.org/changeset/150503>
All reviewed patches have been landed. Closing bug.