OnReceivedUplinkPacketLossFraction() receives [const rtc::Optional<float>&]

webrtc/tools/event_log_visualizer/analyzer.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 1280 matching lines @@
   plot->SetTitle("Reported audio encoder frame length");
 }
 
 void EventLogAnalyzer::CreateAudioEncoderUplinkPacketLossFractionGraph(
     Plot* plot) {
   TimeSeries* time_series = plot->AddTimeSeries(
       "Audio encoder uplink packet loss fraction", LINE_DOT_GRAPH);
   ProcessPoints<AudioNetworkAdaptationEvent>(
       [](const AudioNetworkAdaptationEvent& ana_event) {
         if (ana_event.config.uplink_packet_loss_fraction)
-          return rtc::Optional<float>(static_cast<float>(
-              *ana_event.config.uplink_packet_loss_fraction));
+          return ana_event.config.uplink_packet_loss_fraction;
         return rtc::Optional<float>();
       },
       audio_network_adaptation_events_, begin_time_, time_series);
   plot->SetXAxis(0, call_duration_s_, "Time (s)", kLeftMargin, kRightMargin);
   plot->SetSuggestedYAxis(0, 10, "Percent lost packets", kBottomMargin,
                           kTopMargin);
   plot->SetTitle("Reported audio encoder lost packets");
 }
 
 void EventLogAnalyzer::CreateAudioEncoderEnableFecGraph(Plot* plot) {
@@ skipping 39 matching lines @@
         return rtc::Optional<float>();
       },
       audio_network_adaptation_events_, begin_time_, time_series);
   plot->SetXAxis(0, call_duration_s_, "Time (s)", kLeftMargin, kRightMargin);
   plot->SetSuggestedYAxis(0, 1, "Number of channels (1 (mono)/2 (stereo))",
                           kBottomMargin, kTopMargin);
   plot->SetTitle("Reported audio encoder number of channels");
 }
 }  // namespace plotting
 }  // namespace webrtc