Fix mislabeled argument comments.

Once the existing cases are fixed, we can enable bugprone-argument-
comment to allow clang-tidy to verify these for us automatically going
forward. (http://review.skia.org/306848)

Change-Id: I5c21b28bcbdebb6b74c2924cc5f19c48446ecb42
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306847
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: John Stiles <johnstiles@google.com>
4 files changed