web-animations/web-animations-js — pull request #607 by alancutter (2014-06-13 01:19:57+00:00)
Title: Output the expected failure message instead of undefined

Expected failures were being reported as:
```
Check #anim1 at t=0ms at t=0ms: pass-expected-failure - Expected failure (undefined)
```
They should be:
```
Check #anim1 at t=0ms at t=0ms: pass-expected-failure - Expected failure (Doesn't quite follow path correctly.)
```