Some cleanup of the recorder demo (#847)
Some cleanup of the recorder demo (#847)

* Some cleanup of the recorder demo

- Removed comment about using old getUserMedia because we're not. I guess this is an old comment.
- Removed duplicate 'use-strict' and globals comment.

* Removing another redundant comment

* Didn't mean to remove the adapted from comment

webrtc/samples,taylor-b/samples,webrtc/samples,taylor-b/samples,fippo/webrtc,fippo/webrtc