liblog: benchmarks use google-benchmark library

Remove our circa 2014 snapshot of the google benchmarking library, and
use the now very stable google-benchmark suite. Some porting effort,
and deal with some benchmarking saddle points that take too long to
sort out. Focus on minimal API changes, _odd_ new behaviors, and style.

Test: liblog_benchmarks, ensure results in about the same range
Bug: 69423514
Change-Id: I2add1df9cb664333bcf983b57121ae151b26935b
4 files changed
tree: 35413fec984c9f217ad71788f3ae2383e2e78686
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/