49   base::TaskRunner* task_runner = nullptr;  member
56             base::TaskRunner* task_runner,  in Enable()  argument
59   PERFETTO_DCHECK(task_runner->RunsTasksOnCurrentThread());  in Enable()
64   dg->task_runner = task_runner;  in Enable()
75   PERFETTO_DCHECK(!dg->task_runner ||  in Disable()
76                   dg->task_runner->RunsTasksOnCurrentThread());  in Disable()
77   dg->task_runner = nullptr;  in Disable()
109     if (dg->task_runner) {  in AppendNewRecord()
110       dg->task_runner->PostTask([] {  in AppendNewRecord()
136   auto* task_runner = Delegate::GetInstance()->task_runner;  in IsOnValidTaskRunner()  local
137   return task_runner && task_runner->RunsTasksOnCurrentThread();  in IsOnValidTaskRunner()