Fix auto-unittest compile target
Fix auto-unittest compile target

Since the inspector_overlay moved, we also moved the karma.conf.js.
However, `npm run auto-unittest` was not properly building the
karma configuration file, as that was moved into its parent
directory.

R=d8d88e7d7e77f69e23d1d1432231196fb8e02a62@chromium.org
CC=aerotwist@chromium.org

Change-Id: Ic74c01632fb28de6afe70e0d8555e79f97bbdb33
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2401017
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Commit-Queue: Alex Rudenko <d8d88e7d7e77f69e23d1d1432231196fb8e02a62@chromium.org>
Auto-Submit: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Alex Rudenko <d8d88e7d7e77f69e23d1d1432231196fb8e02a62@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend