Chrome Version: 71.0.3565.0
Chrome OS Version: 11117.0.0
Chrome OS Platform: Grunt
Network info: WiFi

Steps To Reproduce:
(1) Start playing any video, Ex:http://crosvideo.appspot.com/?codec=h264&cycle=true 
(2) Observe audio playback.

Expected Result:
- No pop noise.

Actual Result:
- Observing random pop noise.

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
Sometimes.

Feedback report: https://listnr.corp.google.com/report/85697420866