Support to pull aggregated procstats associations

Bug: 145203981
Test: b/152397079#comment12
Test: atest CtsStatsdHostTestCases
Change-Id: If5b9723a41a9d2eefc2cb132b3a3bf16f57872e9
1 file changed
tree: 450729cccae4ee5f0e209014418d62231628fd1f
  1. atom_field_options.proto
  2. atoms.proto