Extract ART-related atoms into atoms/art/*_atoms.proto Test: atest ArtGtestsTargetChroot Change-Id: Iddde6951e6f4f924021c635052bbecbab8696a0f Merged-In: I669e0cebb2b6d25215308ffd1021667944d3d375 Merged-In: If6558c78477c681f2ff9a102c63ce972e20ef6e1