block_retrieval_queue: Refactor checkCaches to actually only check caches. The caller is responsible for re-caching.
block_retrieval_queue: Refactor checkCaches to actually only check caches. The caller is responsible for re-caching.

keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/client,keybase/client,keybase/client,keybase/client,keybase/client,keybase/kbfs,keybase/kbfs,keybase/client,keybase/kbfs,keybase/client