Add Chromium ARC EventLogTags

Add EventLogTags for org.chromium.arc package.

Small CL that enables org.chromium.arc EventLogTags in master.

Bug: 70513529
Test: compiled on marlin. did not generate any conflict. marlin worked
      Ok.

Change-Id: I4bda5985c337e0b3434774c4b6b11c83d3ac49ed