Fyodor Kupolov d225f0bfd5 Support expiration of preloaded file cache
When device is provisioned, we delete all files from /data/preloads
except file_cache. We should do best effort to keep file_cache during
the first config_keepPreloadsMinDays. After that,
persist.sys.preloads.file_cache_expired is set to 1, which indicates
that cache can be deleted when additional storage space is requested.

Bug: 34690396
Test: Manual + RetailDemoModeServiceTest
Change-Id: Ie584a9dd6689bcc5e6b3cb448e95dfe5f73d2eeb
2017-03-21 16:51:25 -07:00
2017-03-16 15:45:10 -07:00
2017-03-17 16:48:12 -04:00
2017-03-15 21:46:42 -07:00
2017-03-21 11:48:46 +00:00
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