Clean up CanvasTest.cpp some more

Change-Id: I44929cbb13e784f1e1ab7410598c02d285b71def
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212268
Commit-Queue: Hal Canary <halcanary@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Hal Canary <halcanary@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
1 file changed