Add more comments to SkCodec::getRepetitionCount

Bug: skia:
Change-Id: Icc2d7d78106cb587905a8ddb039bc9bf7ae6ad91
Reviewed-on: https://skia-review.googlesource.com/146021
Reviewed-by: Leon Scroggins <scroggo@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
1 file changed