This reverts commit 25e32252.

Reason for revert: Suspect for roll failure: https://ci.chromium.org/ui/p/chromium/builders/try/android_optional_gpu_tests_rel/98554/overview

Original change's description:
> Reland "[heap] Refactor atomic marking phase"
>
> This is a reland of commit a3f66927
>
> The reland addresses a few CHECKs that were too agressive and also
> properly adjusts Oilpan's marking configurations depending on V8's
> flags.
>
> Original change's description:
> > [heap] Refactor atomic marking phase
> >
> > The atomic marking phase was organized in many distinct smaller
> > phases. In particular, before http://crrev.com/c/3584115 the marking
> > phase split into two large separate phases.
> >
> > This CL reorganizes marking into two phases that perform regular V8
> > heap marking, Oilpan, and ephemerons:
> > - A parallel phase that likely drains all marking worklists;
> > - A single-threaded final phase to catch any left overs;
> >
> > This avoids artificial splitting in phases and also avoids repeated
> > starting and joining of jobs.
> >
> > Change-Id: I5cccfc5777837d9ece10d8f4925781bf2d07d9da
> > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3602507
> > Reviewed-by: Omer Katz <omerkatz@chromium.org>
> > Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
> > Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> > Cr-Commit-Position: refs/heads/main@{#80265}
>
> Change-Id: I26648da361b92d787c173aa9d390100ce8958728
> Bug: chromium:1320896
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3616519
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Omer Katz <omerkatz@chromium.org>
> Cr-Commit-Position: refs/heads/main@{#80301}

Bug: chromium:1320896
Change-Id: I01742f25d54de8e4e22fefe87ce61ba295950baa
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3620286
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Owners-Override: Leszek Swirski <leszeks@chromium.org>
Auto-Submit: Leszek Swirski <leszeks@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80311}