Use ThreadData::Now() for TrackingInfo::time_posted initialization

base/threading/worker_pool_posix.cc

Index: base/threading/worker_pool_posix.cc
diff --git a/base/threading/worker_pool_posix.cc b/base/threading/worker_pool_posix.cc
index cd3c9dc7543ac119ecf1e4962c7e6d0a33557c69..bc0ae24b3925b3e896b2b692e35d0f10548a2944 100644
--- a/base/threading/worker_pool_posix.cc
+++ b/base/threading/worker_pool_posix.cc
@@ -102,8 +102,7 @@ void WorkerThread::ThreadMain() {
     stopwatch.Stop();
 
     tracked_objects::ThreadData::TallyRunOnWorkerThreadIfTracking(
-        pending_task.birth_tally, TrackedTime(pending_task.time_posted),
-        stopwatch);
+        pending_task.birth_tally, pending_task.time_posted, stopwatch);
   }
 
   // The WorkerThread is non-joinable, so it deletes itself.