chrome-wrapper.sh

#!/usr/bin/env bash

chrome_aliases=('/usr/bin/google-chrome' '/usr/bin/google-chrome-stable')
wrapper_name="chrome-wrapper"
wrapper_install_path="/opt/$wrapper_name"

cat <<WRP > $wrapper_install_path
#!/bin/bash

_kill_proc() {
  kill -TERM \$chrome
}

trap _kill_proc SIGTERM

/opt/google/chrome/google-chrome \$@ &
chrome=\$!

wait \$chrome
wait \$chrome
WRP

for alias in ${chrome_aliases[@]}; do
  ln -fs $wrapper_install_path $alias
  chmod +x $alias
done

Solution for when Karma or some other test runner can't properly shutdown Chrome.