Skip granting of legacy permissions.

Once this feature flag is flipped, the READ/WRITE_EXTERNAL_STORAGE
permissions will no longer be runtime permissions, so we need to stop
trying to grant them to apps.  (Otherwise the device won't boot.)

Bug: 112545973
Test: manual
Change-Id: I837630619e3f016e4a40ebb391239ecd41032cd2
1 file changed