Mirror the preview for front-facing cameras. do not merge

Now overlay does ROT_90 before FLIP_V or FLIP_H. It should be FLIP_V
or FLIP_H first. The formula should be changed after overlay is fixed.

bug:3059865
Change-Id: Ie4366bf7f1fcac7383e8dfc74b1b865997bbbcc6
4 files changed