Add Android dependency to actionbarcompat samples

Added com.android.tools.build:gradle dependency and mavenCentral()
parent repository to actionbarcompat samples.

Also removed defaultConfig block.

Change-Id: I1aa3268fd4455f60bc90a23d3c6b5c3f2502e90a
4 files changed
tree: 8d218f6af9782bd8f11f5ca8cb0b368ab49accc0
  1. .gitignore
  2. common/
  3. content/
  4. input/
  5. media/
  6. networking/
  7. security/
  8. testing/
  9. ui/