Add initial Robolectric tests

Set up the infrastructure for tests and add a few initial Robolectric
tests for ThemePicker.

Bug: 118758604

Change-Id: Ie6f34c840d31d24349fd12355f93369f51168802
13 files changed
tree: 4f2217d95b01419f8f451047d2f82ac4c3ea464a
  1. res/
  2. robolectric_tests/
  3. src/
  4. src_override/
  5. Android.mk
  6. AndroidManifest.xml