commit 8df22e7cd9c28d46b60fa345c45297cec9d8c05b
author Kevin Han <kevhan@google.com> Tue Jun 01 18:53:30 2021 -0700
committer Kevin Han <kevhan@google.com> Thu Jun 03 19:14:25 2021 -0700
tree fc1d067d7dde7f38cc608e1a479f1c2f8f6b8197
parent ef963fe0790df75e2a02c48ff69db8040da3ea8f

Move unused apps count calculation to bg thread

Move the somewhat expensive calculation of the "Unused apps" count to
the background thread

Initially, the "Unused apps" preference is unavailable. When the bg work
finishes and we see we have a non-zero number of unused apps, we display
the preference and update the summary text.

Bug: 187996287
Test: atest HibernatedAppsPreferenceControllerTest
Test: measure latency of displaying preferences w/ custom trace points

Change-Id: Idb0d836fd8f4bcdd2605a7d59703a7ed53bcd6d4