Merged from http://go/wvgerrit/175350.
Sony has identified a 5-year-old copy-and-paste error in
LicenseKeys::GetAllowedUsage(). For entitled keys, it was calling
CanDecryptContent() instead of GetAllowedUsage() on the entitlement key
session. This meant that for entitled keys, the allowed_usage parameter
was never updated and the return value of the function was indicating
something different than intended.
Bug: 280902715
Test: build_and_run_all_unit_tests
Change-Id: Ic1db01b6dce08d444572f53157ff08b337c48d31
7f16e103e6