tree 4997d1b12acdc4fa6d25cb0d15109d027174b122
parent 2927b07c036431541a8c64ab479637b05bc0c35d
author Angus Kong <shkong@google.com> 1369180800 -0700
committer Angus Kong <shkong@google.com> 1369182394 -0700

Keep camera preview in view hierarchy.

Camera preview is a special case that needs to be kept to avoid unnecessary
start and stop preview.

Change-Id: I6c922d4b35ff86981fa6a3ec3b76417d07a68a0e