rm: Introduce SK_ARM_NEON_WRAP handy wrapper macro.
    
It is used to simplify arm/neon dispatch logic code.
Review URL: https://codereview.appspot.com/6458060

git-svn-id: http://skia.googlecode.com/svn/trunk@4958 2bbb7eff-a529-9590-31e7-b0007b416f81
3 files changed