Add more information to error reporting on connection close
Add more information to error reporting on connection close

Change-Id: Iea389c897f88e68af5e0aeac851d973bb4845619
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2484727
Commit-Queue: Sigurd Schneider <f04d242e109628a27a0f75fd49a87722bcf291fd@chromium.org>
Reviewed-by: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>

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