Revert "Remove overlay logic from package manager and parser"

This reverts commit c6778e5435f0bea1737fd987af3f4480ac3ab2d1.

Reason for revert: This CL causes Bluetooth fail to start

Bluetooth Java services cannot turn on.

Change-Id: I4a9649d61de7781d3a00074da780c3a5a1dfbd56
Fixes: 130260055
Test: compile, BluetoothInstrumentationTests
2 files changed