[presentation-api] new commits pushed by mfoltzgoogle

The following commits were just pushed by mfoltzgoogle to 
https://github.com/w3c/presentation-api:

* Apply simultaneous start() restriction to all browsing contexts.
  by Mark Foltz
https://github.com/w3c/presentation-api/commit/10812bd2a27dbedfba0a64229fd38f043349911f

Received on Monday, 26 December 2016 20:18:27 UTC