Enable tradefed error_prone rules on contrib too

Ensure we maintain the basic same standard in TF.

Test: build with error prone
Change-Id: Ib745cde06ba6bc7275ba0ce5af763a057e968d4b
1 file changed
tree: 37abba8e242d359b2ec697d0f8064ba963c5039b
  1. res/
  2. src/
  3. .gitignore
  4. Android.mk
  5. MANIFEST.mf
  6. OWNERS
  7. README
  8. README.txt