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: http://webrtc.googlecode.com/svn/trunk/webrtc@8265 4adac7df-926f-26a2-2b94-8c16560cd09d
1 file changed