Reland "[gtest] Enforce per-test timeout"

This is a reland of commit 55908f9fe42a83d211a01c6b228374516f47059f

Changes from original:
  crrev.com/c/3787902 fixes a discovered stack use-after-return.
  This fix may be unrelated to the test that prompted the revert,
  ToolsSanityTest.AsanHeapOverflow on ChromeOS-on-Linux, which
  reoccured on ToT without this patch. Discussion: crbug.com/1342445

Original change's description:
> [gtest] Enforce per-test timeout
>
> The gtest launcher currently enforces an aggregate timeout on each batch
> of tests. Offending tests can consume the unused time of other tests in
> the batch, which can cause builders to hang.
>
> This change introduces a more granular timeout detection mechanism. For
> each child process, the launcher (parent) process periodically reads its
> incomplete XML results file and kills any that have not made progress.
> The launcher can then retry the tests that did not complete.
>
> Bug: 1213243
> Change-Id: I4d638c6c346038d1d137b16dbda51a7cb7703363
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3669127
> Reviewed-by: Gabriel Charette <gab@chromium.org>
> Commit-Queue: Jonathan Lee <jonathanjlee@google.com>
> Cr-Commit-Position: refs/heads/main@{#1021366}

Bug: 1213243
Change-Id: I3e785c70bb73d0e37acfe461b4a18212f9651f5e
Cq-Include-Trybots: luci.chromium.try:linux_chromium_chromeos_asan_rel_ng,linux_chromium_asan_rel_ng,win-asan,mac_chromium_asan_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3755603
Commit-Queue: Jonathan Lee <jonathanjlee@google.com>
Reviewed-by: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1029272}