Re: selection: Split addRange.html into 15. (#4549)

Notifying @ayg. *([Learn how reviewing works](https://github.com/w3c/web-platform-tests/blob/master/README.md#test-review).)*

View on GitHub: https://github.com/w3c/web-platform-tests/pull/4549#issuecomment-273346614

Received on Wednesday, 18 January 2017 00:35:49 UTC