Change add to toggle in the comments

TBR: benjaminwagner@google.com
Bug: skia:
Change-Id: I0296eb6e22c9036a080893eec7c7bad446a2f2dd
Reviewed-on: https://skia-review.googlesource.com/70021
Reviewed-by: Yuqian Li <liyuqian@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
1 file changed