Replace custom checkout progress parser with step progress parser
Replace custom checkout progress parser with step progress parser

j-f1/forked-desktop,gengjiawen/desktop,artivilla/desktop,kactus-io/kactus,gengjiawen/desktop,say25/desktop,kactus-io/kactus,BugTesterTest/desktops,desktop/desktop,artivilla/desktop,say25/desktop,j-f1/forked-desktop,gengjiawen/desktop,desktop/desktop,hjobrien/desktop,kactus-io/kactus,shiftkey/desktop,shiftkey/desktop,hjobrien/desktop,desktop/desktop,gengjiawen/desktop,BugTesterTest/desktops,say25/desktop,BugTesterTest/desktops,artivilla/desktop,say25/desktop,shiftkey/desktop,artivilla/desktop,j-f1/forked-desktop,j-f1/forked-desktop,BugTesterTest/desktops,shiftkey/desktop,kactus-io/kactus,desktop/desktop,hjobrien/desktop,hjobrien/desktop