Update from https://crrev.com/307330

net/socket/transport_client_socket_pool.h

Index: net/socket/transport_client_socket_pool.h
diff --git a/net/socket/transport_client_socket_pool.h b/net/socket/transport_client_socket_pool.h
index 15cef5c02ac805986264c4f07c12b31993008718..bcc369f17897166738b59b634318d3a50470a724 100644
--- a/net/socket/transport_client_socket_pool.h
+++ b/net/socket/transport_client_socket_pool.h
@@ -10,6 +10,7 @@
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/profiler/scoped_tracker.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "net/base/host_port_pair.h"
@@ -319,6 +320,11 @@ void TransportConnectJobHelper::SetOnIOComplete(T* job) {
 
 template <class T>
 void TransportConnectJobHelper::OnIOComplete(T* job, int result) {
+  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436634 is fixed.
+  tracked_objects::ScopedTracker tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "436634 TransportConnectJobHelper::OnIOComplete"));
+
   result = this->DoLoop(job, result);
   if (result != ERR_IO_PENDING)
     job->NotifyDelegateOfCompletion(result);  // Deletes |job| and |this|