PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal...

PixelRef now returns (nearly) everything that is currently in SkBitmap. The goal is to refactor bitmap later to remove redundancy, and more interestingly, remove the chance for a disconnect between the actual (pixelref) rowbytes and config, and the one claimed by the bitmap.""""

BUG=

Review URL: https://codereview.chromium.org/110503003

git-svn-id: http://skia.googlecode.com/svn/trunk@12622 2bbb7eff-a529-9590-31e7-b0007b416f81