Update from chromium https://crrev.com/301725/

net/http/http_network_transaction.cc

Index: net/http/http_network_transaction.cc
diff --git a/net/http/http_network_transaction.cc b/net/http/http_network_transaction.cc
index 532f9de0692eeaddfe980c4f913250c9e9328158..a7e248b4f731801d00bf1258a4e9bd2a6e703152 100644
--- a/net/http/http_network_transaction.cc
+++ b/net/http/http_network_transaction.cc
@@ -15,6 +15,7 @@
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/stats_counters.h"
+#include "base/profiler/scoped_profile.h"
 #include "base/stl_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ -597,7 +598,18 @@ void HttpNetworkTransaction::DoCallback(int rv) {
 }
 
 void HttpNetworkTransaction::OnIOComplete(int result) {
+  // TODO(vadimt): Remove ScopedProfile below once crbug.com/424359 is fixed.
+  tracked_objects::ScopedProfile tracking_profile1(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "424359 HttpNetworkTransaction::OnIOComplete 1"));
+
   int rv = DoLoop(result);
+
+  // TODO(vadimt): Remove ScopedProfile below once crbug.com/424359 is fixed.
+  tracked_objects::ScopedProfile tracking_profile2(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "424359 HttpNetworkTransaction::OnIOComplete 2"));
+
   if (rv != ERR_IO_PENDING)
     DoCallback(rv);
 }