Support for attribute "open", "close" and "separators" on mstyle (bug 569125). r=karlt

--HG--
extra : rebase_source : f2e27dae9a993d0b8b707feb2a88b03570e5955d

layout/mathml/nsMathMLmfencedFrame.cpp

@@ -74,6 +74,9 @@ nsMathMLmfencedFrame::InheritAutomaticData(nsIFrame* aParent)
 
   mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
 
+  RemoveFencesAndSeparators();
+  CreateFencesAndSeparators(PresContext());
+
   return NS_OK;
 }