https://bugs.chromium.org/p/chromium/issues/detail?id=675596
origin - http://www.pipiscrew.com/?p=7630 chrome-55-57-showed-download-button-for-all-html5-media
https://bugs.chromium.org/p/chromium/issues/detail?id=675596
origin - http://www.pipiscrew.com/?p=7630 chrome-55-57-showed-download-button-for-all-html5-media