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Mike Conley authored
Bug 1592729 - Add tests to ensure that the Picture-in-Picture toggle and context menus do not display for MediaStream videos. r=Gijs This also updates the canToggle=false code paths in the Picture-in-Picture mochitest head.js file, which were obviously never really exercised until now. Differential Revision: https://phabricator.services.mozilla.com/D51160 --HG-- extra : moz-landing-system : lando
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