tree a7d5dab0c7389632874c1ba84592b97c395b6ee4
parent 6a99ec84cb82ec3afb84da8c550bd0906d104f31
author Jeff Sharkey <jsharkey@android.com> 1379629556 -0700
committer Jeff Sharkey <jsharkey@android.com> 1379645612 -0700

Load RootInfo in background, invalidation.

Move all RootInfo queries to background threads to avoid janking
the UI.  Update passes happen on spawed task, which swaps out updated
cache results when finished.  Support partial updates when only a
single package/authority has changed.  Watch for change notifications
for roots, since flags can change over time.

Ignore stopped packages when in background, but query them for roots
when launching any picker UI.

Optimize management launches by treating as one-shot requests that
don't need to wait for all RootInfo.

Bug: 10600454, 10745490
Change-Id: Ibc7b15688ef6b41bd7e9dd0d7564b501e60e49a9