tree f80e58e2e5db5ec5b162aaf6cc0482bfb9da8219
parent ccbc5c183067ae988f57725cfafda855bafa47ec
author John Reck <jreck@google.com> 1476311272 -0700
committer John Reck <jreck@google.com> 1476373295 -0700

Greatly reduce BenchmarkState overhead

CL reduces BenchmarkState to minimal levels. It also adds
a warmup loop to get things going first before starting measurements.

With this change with clocks /not/ locked on bullhead the test for
RenderNodeJniOverhead is showing a stable (0ns std dev) result
of 54ns, which is approximately the expected amount.

Test: Ran a few perf benchmarks

Change-Id: If01e455884711ebd9cfb89f076efa19dc0b5436d