tldr:
src/third_party/WebKit/Tools/Scripts/run-perf-tests script is going to be replaced by
src/tools/perf/run_benchmark script.
The run-perf-tests is not actively maintained, whereas run_benchmark script (Telemetry based) is owned by chrome-speed-ops@ team. As the two scripts offer similar functionalities, we decide to turn down run-perf-tests script in 2 weeks from now (6/20/2017)
If you have any features you want to add to run_benchmark script, feel free to file a crbug with "Speed > Benchmark" component.
Instruction for how to use
run_benchmark script can be found in
README.md.