Update from https://crrev.com/308996

net/socket/transport_client_socket_pool.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/socket/transport_client_socket_pool.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
@@ skipping 220 matching lines @@
 void TransportConnectJob::MakeAddressListStartWithIPv4(AddressList* list) {
   for (AddressList::iterator i = list->begin(); i != list->end(); ++i) {
     if (i->GetFamily() == ADDRESS_FAMILY_IPV4) {
       std::rotate(list->begin(), i, list->end());
       break;
     }
   }
 }
 
 int TransportConnectJob::DoResolveHost() {
+  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436634 is fixed.
+  tracked_objects::ScopedTracker tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "436634 TransportConnectJob::DoResolveHost"));
+
   return helper_.DoResolveHost(priority(), net_log());
 }
 
 int TransportConnectJob::DoResolveHostComplete(int result) {
+  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436634 is fixed.
+  tracked_objects::ScopedTracker tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "436634 TransportConnectJob::DoResolveHostComplete"));
+
   return helper_.DoResolveHostComplete(result, net_log());
 }
 
 int TransportConnectJob::DoTransportConnect() {
+  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436634 is fixed.
+  tracked_objects::ScopedTracker tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "436634 TransportConnectJob::DoTransportConnect"));
+
   base::TimeTicks now = base::TimeTicks::Now();
   base::TimeTicks last_connect_time;
   {
     base::AutoLock lock(g_last_connect_time_lock.Get());
     last_connect_time = g_last_connect_time.Get();
     *g_last_connect_time.Pointer() = now;
   }
   if (last_connect_time.is_null()) {
     interval_between_connects_ = CONNECT_INTERVAL_GT_20MS;
   } else {
@@ skipping 34 matching lines @@
         FROM_HERE,
         base::TimeDelta::FromMilliseconds(
             TransportConnectJobHelper::kIPv6FallbackTimerInMs),
         this,
         &TransportConnectJob::DoIPv6FallbackTransportConnect);
   }
   return rv;
 }
 
 int TransportConnectJob::DoTransportConnectComplete(int result) {
+  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436634 is fixed.
+  tracked_objects::ScopedTracker tracking_profile(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "436634 TransportConnectJob::DoTransportConnectComplete"));
+
   if (result == OK) {
     bool is_ipv4 =
         helper_.addresses().front().GetFamily() == ADDRESS_FAMILY_IPV4;
     TransportConnectJobHelper::ConnectionLatencyHistogram race_result =
         TransportConnectJobHelper::CONNECTION_LATENCY_UNKNOWN;
     if (is_ipv4) {
       race_result = TransportConnectJobHelper::CONNECTION_LATENCY_IPV4_NO_RACE;
     } else {
       if (AddressListOnlyContainsIPv6(helper_.addresses())) {
         race_result = TransportConnectJobHelper::CONNECTION_LATENCY_IPV6_SOLO;
@@ skipping 246 matching lines @@
     HigherLayeredPool* higher_pool) {
   base_.AddHigherLayeredPool(higher_pool);
 }
 
 void TransportClientSocketPool::RemoveHigherLayeredPool(
     HigherLayeredPool* higher_pool) {
   base_.RemoveHigherLayeredPool(higher_pool);
 }
 
 }  // namespace net