minor fixes to SkRRect

Move methods that are not publicly callable
to SkRRectPriv.h. Name params, add a trailing
comma to the enum list.

R=reed@google.com,bsalomon@google.com
Bug: skia:6898
Change-Id: If93f712656dde563567a647624e58ce9a9d74494
Reviewed-on: https://skia-review.googlesource.com/134423
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Cary Clark <caryclark@skia.org>
4 files changed