Fix calibration loop failure condition.

With the old logic, if the last attempt succeeded, we'd say we failed.

We also print two lines for loop calibration failures.  Quiet that down.

BUG=skia:
R=djsollen@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/431503004
1 file changed