- Use nsIXULRuntime to get prefers-reduced-motion instead of the hidden window - Use nsIScreenManager to get the resolution of the primary display instead of the hidden window Differential Revision: https://phabricator.services.mozilla.com/D219721
- Use nsIXULRuntime to get prefers-reduced-motion instead of the hidden window - Use nsIScreenManager to get the resolution of the primary display instead of the hidden window Differential Revision: https://phabricator.services.mozilla.com/D219721