NQE: Add net log event if the metric changes substantially

net/nqe/event_creator.h

 // Copyright 2017 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.
 
 #ifndef NET_NQE_EVENT_CREATOR_H_
 #define NET_NQE_EVENT_CREATOR_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
@@ skipping 12 matching lines @@
 
 namespace internal {
 
 // Class that adds net log events for network quality estimator.
 class NET_EXPORT_PRIVATE EventCreator {
  public:
   explicit EventCreator(NetLogWithSource net_log);
   ~EventCreator();
 
   // May add network quality changed event to the net-internals log if there
-  // is a change in the effective connection type, or if there is a change in
-  // the availability of HTTP RTT, transport RTT or bandwidth.
+  // is a change in the effective connection type, or if there is a meaningful
+  // change in the values of HTTP RTT, transport RTT or bandwidth.
   // |effective_connection_type| is the current effective connection type.
   // |network_quality| is the current network quality.
-  void MaybeAddEffectiveConnectionTypeChangedEventToNetLog(
+  void MaybeAddNetworkQualityChangedEventToNetLog(
       EffectiveConnectionType effective_connection_type,
       const NetworkQuality& network_quality);
 
  private:
   NetLogWithSource net_log_;
 
   // The effective connection type when the net log event was last added.
   EffectiveConnectionType past_effective_connection_type_;
 
   //  The network quality when the net log event was last added.
   NetworkQuality past_network_quality_;
 
   base::ThreadChecker thread_checker_;
 
   DISALLOW_COPY_AND_ASSIGN(EventCreator);
 };
 
 }  // namespace internal
 
 }  // namespace nqe
 
 }  // namespace net
 
 #endif  // NET_NQE_EVENT_CREATOR_H_