Break video_engine/new_include/common.h into smaller parts.

BUG=
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1571005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4128 4adac7df-926f-26a2-2b94-8c16560cd09d
16 files changed