Add a comment for Frame expando fix
Add a comment for Frame expando fix

mrmr1993/vimium,gdh1995/vimium,philc/vimium,smblott-github/vimium,mrmr1993/vimium,decaffeinate-examples/vimium,smblott-github/vimium,decaffeinate-examples/vimium,smblott-github/vimium,decaffeinate-examples/vimium,philc/vimium,gdh1995/vimium,mrmr1993/vimium,poacher2k/vimium,poacher2k/vimium,philc/vimium,poacher2k/vimium,gdh1995/vimium