Right now we don't have "full package paths" in mobile/android/tests/background/junit3. This ticket tracks fixing that. This lets us get rid of a "deep link" at https://dxr.mozilla.org/mozilla-central/source/mobile/android/mach_commands.py#120, gettings us closer to having the app/ project in the source directory.
https://hg.mozilla.org/integration/fx-team/rev/c90d9b61151efd0c4732c5a39f0eca66c15ba78b Bug 1218935 - Normalize background JUnit3 source layout. r=me,rnewman