ARM Skia NEON patches - 20bis - BitmapProcState accurracy
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

Change-Id: I2452ff401cc584084f44ec3a27240aa564eb19bc
git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@13518 2bbb7eff-a529-9590-31e7-b0007b416f81

VanirAOSP/external_skia,VanirAOSP/external_skia,VanirAOSP/external_skia,VanirAOSP/external_skia,VanirAOSP/external_skia