CameraBase: Don't return an sp<> by reference am: 4b49489c12 am: 8c32699ceb am: 8806c2a11d am: 99c4dd2fe8 am: dd82ab2377 am: 1dd068cd45 am: edf9d2f4d1 am: 6ddd08e3a9 am: 0dcc9bb368
am: b739918940  -s ours

Change-Id: I292f09d3408865d8eb1595a2cd0fd4d5d9cac7cd