alwu df9c134aa6 Bug 1683788 - add telemetry probe for the audio competition. r=bryce
If multiple audible tabs play at the same time, we call it as `Audio Competition`.

When the audio competition happens, there are several possibilities

(1) ignore that and keep multiple tabs playing at the same time
(2) user manually handles that by pausing or muting audible playing tabs, remaining only an audible playing tab
(3) user enables audio focus management, so gecko would pause them and only allow one audible tab playing at a time

By collecting these situations, we can know the details of how user would react for the audio compeition.

In addition, we also collect the situation where no audio competition happens, in order to know whether the audio competition is common to users.

Differential Revision: https://phabricator.services.mozilla.com/D100292
2020-12-24 02:42:56 +00:00
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