Added Gecko reftests because I don't know what the best place to put them in WPT is, and caret rendering is kind of undefined, but... Differential Revision: https://phabricator.services.mozilla.com/D229926
Added Gecko reftests because I don't know what the best place to put them in WPT is, and caret rendering is kind of undefined, but... Differential Revision: https://phabricator.services.mozilla.com/D229926