Use own definition in native code for FileDescriptor ownerId

Used to be exposed via libnativehelper, but only use is within
libcore.

Bug: 151443957
Test: art/tools/run-libcore-tests.sh --mode=device --variant=X64 -- libcore.libcore.io
Change-Id: If81e1ee62e056e0b98c1871b29de2490f62fcc0e
1 file changed