Revert "Cleanup: unify rotation to be enum based instead of int for degree."
Revert "Cleanup: unify rotation to be enum based instead of int for degree."

Reason for revert:
Compile error on bots - A subclass of cricket::VideoFrame still uses old GetRotation return type.

BUG=4145
TBR=guoweis,stefan,pthatcher

This reverts commit 3e733a43f5a1a2c170e1064d0ee0af38d710a64a.

Review URL: https://webrtc-codereview.appspot.com/34159004

git-svn-id: 03ae4fbe531b1eefc9d815f31e49022782c42458@8265 4adac7df-926f-26a2-2b94-8c16560cd09d

Alkalyne/webrtctrunk,aleonliao/webrtc-trunk,jchavanton/webrtc,sippet/webrtc,jchavanton/webrtc,Alkalyne/webrtctrunk,sippet/webrtc,sippet/webrtc,jchavanton/webrtc,aleonliao/webrtc-trunk,jchavanton/webrtc,Alkalyne/webrtctrunk,Alkalyne/webrtctrunk,aleonliao/webrtc-trunk,aleonliao/webrtc-trunk,jchavanton/webrtc,jchavanton/webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,sippet/webrtc,jchavanton/webrtc,aleonliao/webrtc-trunk,krieger-od/webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,aleonliao/webrtc-trunk,Alkalyne/webrtctrunk,sippet/webrtc,Alkalyne/webrtctrunk,krieger-od/webrtc,krieger-od/webrtc,krieger-od/webrtc,sippet/webrtc