[lottiecap] Fix counting of completed tiles.
[lottiecap] Fix counting of completed tiles.

Bug: skia:
Change-Id: I0fce3c9d0a08ab6177c986e4a2ac4ff501ec5bc0
Reviewed-on: https://skia-review.googlesource.com/115040
Reviewed-by: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>
Commit-Queue: Joe Gregorio <b9cf2471ff6d33504cafe8e6f356b732b2cadced@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot