noop: extract a constant and add comments
noop: extract a constant and add comments

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