Notify NQE of TCP RTT values

net/base/socket_performance_watcher_factory.h

Index: net/base/socket_performance_watcher_factory.h
diff --git a/net/base/socket_performance_watcher_factory.h b/net/base/socket_performance_watcher_factory.h
index cbd607ab3366cbba1e24dea1a6dcaab205dd8320..2e9070d6f6ab896a09edf61c8b017e4660ee0d3e 100644
--- a/net/base/socket_performance_watcher_factory.h
+++ b/net/base/socket_performance_watcher_factory.h
@@ -42,6 +42,10 @@ class NET_EXPORT_PRIVATE SocketPerformanceWatcherFactory {
   virtual void OnUpdatedRTTAvailable(const Protocol protocol,
                                      const base::TimeDelta& rtt) = 0;
 
+  // Called when one of the watchers created by |this| is being reused for
+  // another transport layer connection.
+  virtual void OnWatcherReset() = 0;
+
  protected:
   SocketPerformanceWatcherFactory() {}