Following the Chrome Remote Debugging on Android documentation, I am eventually redirected to a web app hosted on AppSpot.com. My organization has strict PII requirements and using an external app like this is a risk for us.
Where can I find the source of the Dev Tools to deploy internally?
I have looked for the dev tools in Blink repo (https://chromium.googlesource.com/chromium/blink.git) and a recent Chromium tarball using find . -iname devtools.css and didn't find anything.
I have looked at the network inspector while debugging, and I do not believe the AppSpot app could receive PII currently, but my organization will not take the risk that this may change in the future.
I understand maintaining an internal deploy for all the different Chrome versions will be annoying.
Use Chrome Canary instead, it has better, more integrated Mobile debugging support.
Plug in your Android device, run adb devices from the command line and then in Chrome Canary visit chrome://inspect. Your device should be listed there, and then you can debug the pages on the device with the DevTools that come with Chrome and not on the appspot domain.