ARM Skia NEON patches - 20bis - BitmapProcState accurracy

Use SkFractionalInt for some calculations to improve accuracy.

Signed-off-by: Kévin PETIT <kevin.petit@arm.com>

BUG=skia:2175
NOTRY=true
R=djsollen@google.com, mtklein@google.com, hshi@chromium.org

Author: kevin.petit@arm.com

Review URL: https://codereview.chromium.org/167433002

git-svn-id: http://skia.googlecode.com/svn/trunk@13518 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed