Add existence check for face detection methods.

android.hardware.Camera.setFaceDetectionListener()
android.hardware.Camera.startFaceDetection()
android.hardware.Camera.stopFaceDetection()
android.hardware.Camera.Parameters.getMaxNumDetectedFaces()

Bug: 6707152
Change-Id: Ia6b54246273548db44ec28c40f9efe49048ea8d5
1 file changed