Allow extra tracing categories to be added to startup profiling

Depends on https://chromium-review.googlesource.com/c/catapult/+/1378200
to function.

Change-Id: Ie7056d2901cf88098de624a0e3bf6e3d061575d6
Reviewed-on: https://chromium-review.googlesource.com/c/1377345
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Reviewed-by: Mohamed Heikal <mheikal@chromium.org>
Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#616748}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 95eb1281833d5f607c231e12787ec6a7bdf53afb
2 files changed