This is a very simple zsh plugin for installing the chromium depot_tools. Installing this plugin will put all of the chromium depot_tools in your path automatically.
zplug "kuoe0/zsh-depot-tools", hook-build:"./install.sh"
If depot_tools becomes out of date, update depot_tools by running the following:
$ ./install.sh
Further information about the actual depot_tools can be found here on the official depot_tools site. Here is the git remote depot_tools_git