Currently specifying shape-margin for box shapes (http://dev.w3.org/csswg/css-shapes/#typedef-box) has no effect.
Created attachment 217848 [details] Patch Just giving the bots a crack at an incomplete version of this patch.
Created attachment 217885 [details] Patch Corrected BoxShape's internal shape-margin/paddding bounds FloatRoundedRect initialization. Tests for the padding bounds will be added when the rest of shape-padding for box shapes implementation is ready.
Comment on attachment 217885 [details] Patch Nice catch. r=me
Comment on attachment 217885 [details] Patch Clearing flags on attachment: 217885 Committed r159787: <http://trac.webkit.org/changeset/159787>
All reviewed patches have been landed. Closing bug.