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This change is meant to provide extra information to debug
UNEXPECTED_JS_ERROR and UNEXPECTED_ERROR we get from time to time in
production.

Bug: b/139791239
Change-Id: I74b4d284a70e9a4082ce64b493f1fdd6c0a7488a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1771910
Commit-Queue: Stephane Zermatten <szermatt@chromium.org>
Reviewed-by: Mathias Carlen <mcarlen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693063}