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Otherwise, if it's destroyed through TLS, it can hang forever waiting
for a signal from the StackSamplingThread which never occurs.

This is going back to the behavior prior to
https://chromium-review.googlesource.com/c/chromium/src/+/1638578

R=ssid@chromium.org

Bug: 995323
Change-Id: I08863f5ee8ccd01c70b95bbce5fc28922dc06d1f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1761291Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: ssid <ssid@chromium.org>
Commit-Queue: oysteine <oysteine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688622}