We currently create index packs and generated files for 3 build configurations; linux, chromeos, and android. The work is done in three different gen bots; codesearch-gen-chromium-* at https://build.chromium.org/p/chromium.infra.codesearch/builders.

This causes index packs for different revisions to be merged together as one creating possible inconsistencies (we haven't has reports tracked to this issue). Each pushed index pack currently update the revision file sent to the Xrefs pipeline which is causing issue for how new index packs are picked up.