Add atom for OptimizeStats

Design Doc: go/appsearch-metrics
Eldar: eldar/148520611
bug: b/173532925
Test: It builds

Change-Id: I3b10ce296bbf5947d4d9e4432e1cfce1c8aaa6d3
(cherry picked from commit 71b3d8592467a283c4b65192f902e8362ae2e356)
1 file changed
tree: bccadcbec10a4dfe9b7651697eb04f428f143a22
  1. stats/
  2. OWNERS