Revert "Revert "implement SkScalar versions in terms of float versions""

This reverts commit 0e6db75eebab430e7f6665c8cfa1e7dcd2fef123.

Bug: skia:
Change-Id: I015d01efc58dfe03dae6bcc57c4b1102276e7566
Reviewed-on: https://skia-review.googlesource.com/127967
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
5 files changed