Add unexpected files to presubmit error
Add unexpected files to presubmit error

This makes it easier to debug which files are incorrectly bundled
with other changes.

R=993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org

Bug: none
Change-Id: Ifdf56da22a164cc2bbc762f79d80f70122f6057e
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2817078
Auto-Submit: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>

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