[automerger skipped] Merge "New CTS test: WallpaperManager, test for 1x1 pixel bitmaps." into pie-cts-dev am: d2a0af367f  -s ours am: 00512919a7  -s ours
am: a4dec8db1b  -s ours

Change-Id: Ib45af3fb502490fe95f1134419b9d0fe0c8bf636