Extract trace from TaskAnnotator::RunTask to its call sites

components/timers/alarm_timer_chromeos.cc

Index: components/timers/alarm_timer_chromeos.cc
diff --git a/components/timers/alarm_timer_chromeos.cc b/components/timers/alarm_timer_chromeos.cc
index 341818a60d736fcbce8b1cea6a8838f2dc863ada..fd785927a601a35915083ed778da70b09998f4b8 100644
--- a/components/timers/alarm_timer_chromeos.cc
+++ b/components/timers/alarm_timer_chromeos.cc
@@ -428,9 +428,18 @@ void AlarmTimer::OnTimerFired() {
   else
     Stop();
 
+  TRACE_EVENT_WITH_MEMORY_TAG2(

[danakj, 2015/07/15 18:03:23]

You want to cover the time in this function right? That's the point of moving
it? Why doesn't this trace cover the things this function is doing above then?

+      "toplevel",
+      "AlarmTimer::OnTimerFired",
+      pending_task.posted_from.function_name(),  // Name for memory tracking.
+      "src_file",
+      pending_task.posted_from.file_name(),
+      "src_func",
+      pending_task.posted_from.function_name());
+
   // Now run the user task.
   base::MessageLoop::current()->task_annotator()->RunTask(
-      "AlarmTimer::Reset", "AlarmTimer::OnTimerFired", *pending_user_task);
+      "AlarmTimer::Reset", *pending_user_task);
 }
 
 OneShotAlarmTimer::OneShotAlarmTimer() : AlarmTimer(false, false) {