Per https://caniuse.com/ and MDN,

• -webkit-border-radius superseded by unprefixed border-radius supported since Chrome 5 released 05/2010, Safari 5 09/2010, Android Browser 2.2 05/2010
• -webkit-box-shadow superseded by unprefixed box-shadow supported since Chrome 10 released 03/2011, Safari 5.1 03/2012, Android Browser 4 10/2011
• -webkit-box-sizing superseded by unprefixed box-sizing supported since Chrome 10 released 03/2011, Safari 5.1 03/2012, Android Browser 4 10/2011
• -webkit-transform superseded by unprefixed transform supported since Chrome 36 released 07/2014, Safari 9 10/2015, Android Browser >4.4.4 >07/2014
• -webkit-transition superseded by unprefixed transition supported since Chrome 26 released 02/2013, Safari 9 10/2015, Android Browser 4.4 12/2013

None. Probably installing old browser versions if you don't trust documentation.