Improving padding rules and breaking out bw allocation to ViEEncoder.

BUG=1837
TESTS=vie_auto_test --automated, trybots
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2170004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4693 4adac7df-926f-26a2-2b94-8c16560cd09d
8 files changed