This CL optionally integrates ScopedSpinGuard (an atomic boolean) with
crashpad::Annotation.
Subclasses of Annotation can choose to integrate ScopedSpinGuard into
their Set(...) methods to ensure reads and writes are serialized.
I didn't integrate this into StringAnnotation in this CL, but it'd be
pretty trivial to do in a follow-up.
Change-Id: I1c5b8982576b03f9780a57acb7627c9194f8f0ff
Bug: crashpad:437
Reviewed-on: https://chromium-review.googlesource.com/c/crashpad/crashpad/+/4022484
Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Ben Hamilton <benhamilton@google.com>
Reviewed-by: Robert Sesek <rsesek@chromium.org>