SnapdragonCamera:Fix Face circles are drawn at an offset

The layoutParam of FaceView is not the same as prview surface,
and cause the offset.Remove setting layoutParam in the method
onStartFaceDetection() and calculate the screen ratio in the
VideoModule to get the correct layoutParam for FaceView

Change-Id: I9bc2759bcb50514c183628e9d4f31d2f54437dc7
CRs-Fixed: 1064295
2 files changed