Firefox: Video Play Button "Watch the keynote" Buttons Broken

[dman777]

With Linux Firefox 31.8.0 ESR, when I click on "Watch the keynote" nothing happens. In the console I see:

Content Security Policy: Couldn't process unknown directive 'upgrade-insecure-requests'
mutating the [[Prototype]] of an object will cause your code to run very slowly; instead create the object with the correct initial [[Prototype]] value using Object.create webcomponents.min.js:16
window.controllers is deprecated. Do not use it for UA detection. nsHeaderInfo.js:412
window.controllers is deprecated. Do not use it for UA detection. nsHeaderInfo.js:412
window.controllers is deprecated. Do not use it for UA detection.