Camera: set default focus and metering areas to null.

Earlier, default values were not null which
is not compatiable with our HAL.

(cherry picked from commit d45720bbf03b699f9afd5909fedd82ee5a2e9745 )

Change-Id: Icfbd06ecfbf55acd1502a7d395a9239c9c9c2b1a

Conflicts:
	src/com/android/camera/FocusOverlayManager.java
(cherry picked from commit 98b3c247b8bd03b16d3b6f4b147425cad31684f7)
(cherry picked from commit d3c5da81208bd01265950b31ef670bf153d0bdf8)
1 file changed