chromium/tools/perf/testdata/dummy_trace.json

{
  "traceEvents": [
    {"pid":12345,"tid":12345,"ts":826,"ph":"X","cat":"cc,benchmark",
        "name":"Scheduler::BeginFrame","dur":32,"tdur":32,"tts":816688,
        "args":{}}
  ],
  "metadata":{
    "trace-config":"{\"included_categories\":[\"benchmark\"]}"
  }
}