Previously, all metrics/configs would deactivate on system server death.
Now, active status is restored.
Bug: 129717537
Test: bit statsd_test:*
Test: libprotoutil_test:ProtoOutputStream*
Change-Id: Idf372457f60a931a2d00176a5eab58c534a25e41
There must be equal number of start/end calls with right token given in
order, if used in wrong order, ProtoOutputStream will have empty output.
Also refactor Android.bp, so the gtest is standalone unit test, it used
to require compile/push libprotoutil.so to device.
Bug: 77342154
Test: atest libprotoutil_test
Change-Id: I0011bbab34c04cb38164d2ed21cd818d52a2ecf9
