This reverts commit 64bf4c53.

Reason for revert: fix in patchset 2

Original change's description:
> Revert "cppgc: Use tracing scopes"
>
> This reverts commit 548fe208.
>
> Reason for revert: Issues on Mac64: https://ci.chromium.org/p/v8/builders/ci/V8%20Mac64%20-%20debug/31710
>
> Original change's description:
> > cppgc: Use tracing scopes
> >
> > The scopes themselves mostly have the same coverage as current scopes in
> > blink. A few exception due to encapsulation exist and are highlighted as
> > comments on the CL.
> >
> > Bug: chromium:1056170
> > Change-Id: I48af2cfdfd53a8caa1ab5d805d377f6f13a825bc
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2540552
> > Commit-Queue: Omer Katz <omerkatz@chromium.org>
> > Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#71285}
>
> TBR=ulan@chromium.org,mlippautz@chromium.org,omerkatz@chromium.org
>
> Change-Id: I20dce9309dcaeff6ea61bdc51df3a2f62c2a103f
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: chromium:1056170
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2550782
> Reviewed-by: Clemens Backes <clemensb@chromium.org>
> Commit-Queue: Clemens Backes <clemensb@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71289}

TBR=ulan@chromium.org,mlippautz@chromium.org,clemensb@chromium.org,omerkatz@chromium.org

# Not skipping CQ checks because this is a reland.

Bug: chromium:1056170
Change-Id: I9c57cdb3b0d310366cdf3e6fbcd1254fdc363163
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2550666
Auto-Submit: Omer Katz <omerkatz@chromium.org>
Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71305}