Rename getRuleCMakeName() to getRuleSimpleName().

Rename function so as to not suggest it is for CMake use only
as the simplified rule name may be used for other project
formats.

Bug: skia:12541
Change-Id: I5b739dedb447ea5e0191daa9ac4df2bbcd70d6b6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/566439
Reviewed-by: Kevin Lubick <kjlubick@google.com>
3 files changed