Specifies the reason a tab was muted or unmuted.
Values of this type are strings. Possible values are:
Tab capture started, forcing a muted state change.
An extension set the muted state. If this is the reason,
tabs.mutedInfo will contain the ID of the extension responsible.
The user set the muted state.
BCD tables only load in the browser
Note: This API is based on Chromium's
chrome.tabs API. This documentation is derived from
tabs.json in the Chromium code.