This reverts commit 1ebf5f72.

Reason for revert: Breaks TSAN

Original change's description:
> [api,heap] Remove deprecated Persistent APIs
> 
> Removes APIs:
> - MarkIndependent
> - IsIndependent
> - MarkActive
> - RegisterExternalReference
> 
> All weak persistent handles are now treated as independent. Users of
> traced handles should already use v8::EmbedderHeapTracer.
> 
> Bug: chromium:923361
> Change-Id: Ic90a647fe2ce9db92197ad6560e4907290805592
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1578459
> Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
> Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#60953}

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

Change-Id: I8281daf30b67c1b71ef6e65d8f13a59230ba0334
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:923361
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1578900Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60954}