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
1. Disable BatteryType section which is device-specific
2. Make timeout longer since meminfo section timedout in test
3. make some negative values sint
4. varint can be 64 bits, there is a bug implicitly convert it to 32
which loses values.
5. Found another bug which failed to read 64 bits varint, create a
native test to make sure it works.
Bug: 77291057
Test: atest CtsIncidentHostTestCases:com.android.server.cts.IncidentdTest
Change-Id: I04cc730741f7901f37ac57a11af7777d57118a23
