Setting HTMLMediaElement.muted to the same value should not fire a volume change event: - https://html.spec.whatwg.org/#dom-media-muted Chrome and Firefox agree with the specification.
Created attachment 291683 [details] Patch
Comment on attachment 291683 [details] Patch Clearing flags on attachment: 291683 Committed r207368: <http://trac.webkit.org/changeset/207368>
All reviewed patches have been landed. Closing bug.