Add Robov3 to external/robolectric

- Use prebuilts for Robov3 (unlike Robov2 in external) to allow
  quicker updates of prebuilts since forking of code will be
  discouraged and much harder to do. It also improves build
  speed and allows us to not replicate their complicated
  maven build in gradle.
- Details of jars can be found in README.txts and details on how
  to generate new jars can be found in update_robolectric.sh
- Goal is to have all of Android repo switch to Robov3 and
  delete Robov2 from external.
- Main benefits over v2 is support for KitKat and Lollipop
  API calls.

Change-Id: I60d7b913aaf620f99af4a103d4f93ec705e60fdc
735 files changed
tree: 2938d140853ba370f537a5e4d7daff1d056f0b92
  1. .idea/
  2. v1/
  3. v3/
  4. .gitignore
  5. .pairs
  6. .travis.yml