Commented SSE blend functions and cleaned-up variable naming.

R=senorblanco@chromium.org, alokp@chromium.org, reed@google.com, bungeman@google.com

Author: ernstm@chromium.org

Review URL: https://chromiumcodereview.appspot.com/17847010

git-svn-id: http://skia.googlecode.com/svn/trunk@9870 2bbb7eff-a529-9590-31e7-b0007b416f81
2 files changed