Roll Perfetto Trace Processor Linux from 2c978365c6b3 to b4fd94da35cb

https://android.googlesource.com/platform/external/perfetto.git/+log/2c978365c6b3..b4fd94da35cb

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/perfetto-trace-processor-linux-chromium
Please CC perfetto-bugs@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Tbr: perfetto-bugs@google.com
Change-Id: I954c5d99aa094b377e47b9df52371b410505cd84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2825411
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Bot-Commit: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#872380}