[telemetry] Move Results options out of PageTest/Measurement into their own module.
They were troublesome in PageTest/Measurement because usually you don't know what the PageTest/Measurement will be until after you parse the options.
BUG=
255696,
270884
TEST=tools/perf/run_benchmark run --help; tools/perf/run_measurement --help; content/test/gpu/run_gpu_test webgl_conformance
Committed:
https://src.chromium.org/viewvc/chrome?view=rev&revision=217984