Add @test and @Ignore to untested test methods.

Error prone complains when trying to merge launcher3 code to platform pi-dev.

"This looks like a test method but is not run; please add @test and @Ignore,
or, if this is a helper method, reduce its visibility."

Change-Id: I95f55b95d8f7752c9c941f0828ca22d6427528c6