inline SkMulDiv now that 64bit mul is inlineable

TBR=caryclark@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/242493006

git-svn-id: http://skia.googlecode.com/svn/trunk@14268 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed