subResult property
The name of "subResult" comes from the special treatment of "sub_result" in SkiaPerf. If not provided, its value will be set to kSkiaPerfValueKey.
When Google benchmarks are converted to SkiaPerfPoint, this subResult could be "cpu_time" or "real_time".
When devicelab benchmarks are converted to SkiaPerfPoint, this subResult is often the metric name such as "average_frame_build_time_millis" whereas the testName is the benchmark or task name such as "flutter_gallery__transition_perf".
Implementation
final String subResult;