da48461ba2
[ Merge of http://go/wvgerrit/95406 ] There was an issue with DeleteEntry() where it would result in an invalid table state if shrinking the usage table when the number of sessions is at its max. This required changing how the usage table invalidates entries. Now, after invalidating an entry (marking an entry as kStorageTypeUnknown) the table is defragmented if specified to. Defragmentation involves: 1) Move valid entries near the end of the table to the position of invalid entries near the front of the table. 2) Shrinking the table to cut off trailing invalid entries. This change updates the existing tests to pass, but still needs new tests for some of the edge cases. Bug: 150887808 Bug: 149100568 Test: Linux unit tests and Android unit tests Change-Id: I70c7b296e5e4b367746fcdaabbf0f12dcfb39230