Revert "Fix a fail from the backup transport fix"

This reverts commit 3fcd3dd219d64b886ffaacc72b928e8af5abc2c9.
Revert "Reduce EntropyMixer seed size from 4096 to 512 bytes."

This reverts commit 52426d50aee16a361be1e9308fe60fb48adc953a.
Revert "Don't ANR when no windows are touchable."

This reverts commit 7668466991033b754e3d5b6d484d001f65ff7c4e.
Revert "frameworks: squash of leak & race fixes"

This reverts commit 72914a4e7fa828e44707327d5b41865fcbd50fd3.