Plus some refactoring to correctly handle padding. BUG=4311 R=mflodman@webrtc.org, stefan@webrtc.org Review URL: https://webrtc-codereview.appspot.com/45429004 Cr-Commit-Position: refs/heads/master@{#8757} git-svn-id: http://webrtc.googlecode.com/svn/trunk@8757 4adac7df-926f-26a2-2b94-8c16560cd09d