Previosly, SkSize had a base class, which prevented it.
Also removes unused SkISize::clampNegToZero() and
SkSize::clampNegToZero().
Change-Id: I7b93b42f6f6381c66e294bbedee99ad53c6c3436
Reviewed-on: https://skia-review.googlesource.com/13187
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
It is the only file where Test is the prefix rather than the sufix.
This patch fixes that so it matches with the rest of the files
under tests/ directory.
And separate SkISize test into its own DEF_TEST().
BUG=None
TEST=make tests && out/Debug/tests
R=mtklein@google.com
Author: tfarina@chromium.org
Review URL: https://codereview.chromium.org/337783007