[atoms.proto] Added TEST_MAPPING file to force presubmit tests

- added presubmit tests for atoms.proto changes

Bug: 270167728
Test: VendorAtomCodeGenJavaTest
Change-Id: I0dccbf73031221ecdd72ba77b6f42f6cdc157a73
1 file changed
tree: b3563bbe833d927c88e37bbde6afb79685cb1839
  1. stats/
  2. OWNERS