Broken IPython notebook integration

I recently updated my MPL version from 1.3 to master, and noticed IPython notebook integration is broken for me (Mac, Chrome). See the error message at http://nbviewer.ipython.org/6386054

I bisected this to 27482be73b5ad69d2d52cc77cdf698d3a0a6d3e1

Is this a known issue? Is it still possible to use IPython's (static) inline backend after this commit?