report ignore attr once only

bots like this one
https://chromium-swarm.appspot.com/task?id=3bb84dda02fc0e10
fill its log with this debug message, so just
write it once

R=fmalita@chromium.org
Bug: skia:
Change-Id: Ia82d89aa23c3a5984080f5d9efdc03ff18b6515e
Reviewed-on: https://skia-review.googlesource.com/108100
Commit-Queue: Florin Malita <fmalita@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
1 file changed