snappy::CompressFromIOVec
This reads from an `iovec` array rather than from a `char` array as in `snappy::Compress`. PiperOrigin-RevId: 476930623
PiperOrigin-RevId: 347861229
This lets us remove main() from snappy_bench.cc and snappy_unittest.cc, which simplifies integrating these tests and benchmarks with other suites. PiperOrigin-RevId: 347857427