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This is used whenever the watchdog service (daisydog) fails to start up
correctly.  We don't expect this to happen on real devices, so we want
to get a handle if it actually does (and how often).

BUG=673501

Review-Url: https://codereview.chromium.org/2571873002
Cr-Commit-Position: refs/heads/master@{#438643}