Bug 1527702 - Followup: Remove unused DISCOVERY_STREAM_REC_IMPRESSION action (#4800)
Bug 1527702 - Followup: Remove unused DISCOVERY_STREAM_REC_IMPRESSION action (#4800)


Mardak/activity-stream,rlr/activity-streams,Mardak/activity-stream,mozilla/activity-stream,rlr/activity-streams,mozilla/activity-stream,Mardak/activity-stream,rlr/activity-streams,Mardak/activity-stream,rlr/activity-streams,mozilla/activity-streams,mozilla/activity-streams,mozilla/activity-stream,mozilla/activity-stream