Don't clobber thread hung status on resume from suspend.
Don't clobber thread hung status on resume from suspend.

The OnResume() method would reset |hang_failures_| and
|last_audio_thread_timer_tick_|, then call into
RecordAudioThreadStatus() which would cause the thread
to be spuriously recorded as having recovered.

The new code requires three successful ticks of the
hang timer before marking the thread as recovered.

BUG=422522
TEST=Resume doesn't incorrectly trigger recovered status.

Review URL: https://codereview.chromium.org/1524703003

Cr-Commit-Position: 972c6d2dc6dd5efdad1377c0d224e03eb8f276f7@{#365170}

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