refactoring

  - move helpers up to the top of the file
  - add some explicit casts and rearrangements
    to help GCC/ARM builds understand

Change-Id: I2d5c67c2482b679ee12c420e9eda1471119a0117
Reviewed-on: https://skia-review.googlesource.com/99920
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
1 file changed