In manage mode, touching launches a VIEW intent for the file. Also
adds actions for sharing and deleting.
Move roots and thumbnail caches into Application object, and flush
cache when thumbnail size changes. Listen for package changes and
broadcasts that should invalidate our roots cache.
Pick default grid/list mode based on provider hint.
Bug: 10329983, 10330210, 10378834, 10330069
Change-Id: I75afb1c58ab71bb9d55852b1059da7257a376248
When requesting thumbnails, check if their dimensions are larger
than requested, and downscale to avoid memory pressure. Load them
async and with LruCache.
Extend MatrixCursor so that RowBuilder can offer() columns without
requiring they know the projection map. This makes it easier to
respond to query() calls, where the remote side controls the
projection map. Use it to handle custom projections in external
storage backend.
Update date/time formatting to match spec.
Bug: 10333418, 10331689
Change-Id: I7e947a8e8068af8a39b55e6766b3241de4f3fc16
