tree ff8230d5c7681c5bf378cbd9eee086b7dfce28a7
parent 5001001d1164389a96a46121c29e63db20f11281
author Andy McFadden <fadden@android.com> 1357689975 -0800
committer Andy McFadden <fadden@android.com> 1357928170 -0800

Add some comments.

Also, minor tweak to SurfaceTextureLayer.

Change-Id: If616d5ee4e8226dd0e16c5dbb0e0f80db553110e