Remove public version of SkMatrix::mapPointsWithStride.

Use private version already in SkMatrixPriv.

Change-Id: I6e9546afdf2b072402f9deecec99a6d236e2c7f4
Reviewed-on: https://skia-review.googlesource.com/91400
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
8 files changed