More viewMatrix renaming

Change-Id: I9e6ecab124da0c03f31968270b2df79e3cd129d4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259979
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Herb Derby <herb@google.com>
3 files changed