Instrumenting QUIC code to find jank in GetConnectionDescriptionString

net/quic/quic_connection_logger.cc

Index: net/quic/quic_connection_logger.cc
diff --git a/net/quic/quic_connection_logger.cc b/net/quic/quic_connection_logger.cc
index 8a9c3a711181be7109d1f7232168fd43a2cf0713..d804bbbc80ec779ecc201a7d97b214fa00fc62ab 100644
--- a/net/quic/quic_connection_logger.cc
+++ b/net/quic/quic_connection_logger.cc
@@ -284,6 +284,12 @@ const char* GetConnectionDescriptionString() {
   // This function only seems usefully defined on Windows currently.
   if (type == NetworkChangeNotifier::CONNECTION_UNKNOWN ||
       type == NetworkChangeNotifier::CONNECTION_WIFI) {
+    // TODO(rtenneti): Remove ScopedTracker below once crbug.com/422516 is
+    // fixed.
+    tracked_objects::ScopedTracker tracking_profile1(
+        FROM_HERE_WITH_EXPLICIT_FUNCTION(
+            "422516 QuicConnectionLogger GetConnectionDescriptionString1"));
+
     WifiPHYLayerProtocol wifi_type = GetWifiPHYLayerProtocol();
     switch (wifi_type) {
       case WIFI_PHY_LAYER_PROTOCOL_NONE: