MathML styling fails in EPUB TestSuite tests with MathJax

[rkwright]

From Peter Krautzberger, 13 August 2014:

• 020-023 will work on Firefox and Safari but fail on MathJax. The reason is that to support stylesheets MathJax would have to excessively call getComputedStyle which is computationally heavy and not supported on all browsers we support (IE<9). Inline CSS would actually work with MathJax as would MathJax-specific CSS.

This is actually a place where Readium might be able to do better than MathJax in general -- getComputed style could be calculated once and stored. Or perhaps there's some way to generate a MathJax stylesheet from the ones for MathML in the epub file.

RKW: Seems like it might be an interesting experiment to somehow enable this with Readium Chrome Extension to see what the performance is like.