Reduce the frequency of the text atlas compaction.

Change-Id: I2e3e9add5f9a9074243d220fa37e610e6ad086c8
Reviewed-on: https://skia-review.googlesource.com/57111
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Derek Sollenberger <djsollen@google.com>
1 file changed