Original change's description:
> Switch tracing to use v8::TracingController
>
> BUG=v8:6511
> R=fmeawad@chromium.org
>
> Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng
> Change-Id: I4961e4b61a9ddc98385ed97c3ffcbcaef2d9cba7
> Reviewed-on: https://chromium-review.googlesource.com/543144
> Commit-Queue: Jochen Eisinger <jochen@chromium.org>
> Reviewed-by: Fadi Meawad <fmeawad@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#46307}

BUG=v8:6511
TBR=fmeawad@chromium.org

Cq-Include-Trybots: master.tryserver.chromium.linux:linux_chromium_rel_ng;master.tryserver.v8:v8_linux64_tsan_rel
Change-Id: Ide32b409248dfd466e7c0bae1d8ae61d6a955d98
Reviewed-on: https://chromium-review.googlesource.com/558865
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46381}