Minor cleanup (typos, white-space)

These are all non-substantive changes left over after all other CLs were calved off of the original omnibus CL.

Change-Id: I0da0bf2bc246e37ef6c940a19ea7297cce4ed85c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/582797
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
8 files changed