Some small SkJumper refactoring.

No generated code changes.

Change-Id: I2d480b5391f8246a01118766a9522d528a87f75a
Reviewed-on: https://skia-review.googlesource.com/9129
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
2 files changed