Support tracking of IPC messages as tasks in profiler

base/tracked_objects.cc

Index: base/tracked_objects.cc
===================================================================
--- base/tracked_objects.cc	(revision 108629)
+++ base/tracked_objects.cc	(working copy)
@@ -509,6 +509,31 @@
 }
 
 // static
+void ThreadData::TallyRunInAScopedRegionIfTracking(
+    const Births* birth,
+    const TrackedTime& start_of_run,
+    const TrackedTime& end_of_run) {
+  if (!kTrackAllTaskObjects)
+    return;  // Not compiled in.
+
+  // Even if we have been DEACTIVATED, we will process any pending births so
+  // that our data structures (which counted the outstanding births) remain
+  // consistent.
+  if (!birth)
+    return;
+
+  ThreadData* current_thread_data = Get();
+  if (!current_thread_data)
+    return;
+
+  Duration queue_duration = Duration();
+  Duration run_duration = end_of_run - start_of_run;
+  current_thread_data->TallyADeath(*birth, queue_duration, run_duration);
+}
+
+
+
+// static
 ThreadData* ThreadData::first() {
   base::AutoLock lock(*list_lock_);
   return all_thread_data_list_head_;