Do not hold the critical section in VideoCaptureAndroid::SetCaptureRotation since it would case possible deadlock with OS Camear thread.

BUT=3464
TEST=Manual Test with WebRTCDemo
R=glaznev@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/21719004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6509 4adac7df-926f-26a2-2b94-8c16560cd09d