Abolish absClear

Bug: skia:
Change-Id: Ic4a0e640623677c06112d0735ffc5682049baf11
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/240771
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
4 files changed