Add support for field trials to event log visualizer.

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 1139 matching lines @@
         }
       }
       ++rtcp_iterator;
     }
     if (clock.TimeInMicroseconds() >= NextRtpTime()) {
       RTC_DCHECK_EQ(clock.TimeInMicroseconds(), NextRtpTime());
       const LoggedRtpPacket& rtp = *rtp_iterator->second;
       if (rtp.header.extension.hasTransportSequenceNumber) {
         RTC_DCHECK(rtp.header.extension.hasTransportSequenceNumber);
         feedback_adapter.AddPacket(rtp.header.extension.transportSequenceNumber,
-                                   rtp.total_length, 0);
+                                   rtp.total_length, PacketInfo::kNotAProbe);
         feedback_adapter.OnSentPacket(
             rtp.header.extension.transportSequenceNumber, rtp.timestamp / 1000);
       }
       ++rtp_iterator;
     }
     time_us = std::min(NextRtpTime(), NextRtcpTime());
   }
   // We assume that the base network delay (w/o queues) is the min delay
   // observed during the call.
   for (TimeSeriesPoint& point : time_series.points)
     point.y -= estimated_base_delay_ms;
   // Add the data set to the plot.
   plot->series_list_.push_back(std::move(time_series));
 
   plot->SetXAxis(0, call_duration_s_, "Time (s)", kLeftMargin, kRightMargin);
   plot->SetSuggestedYAxis(0, 10, "Delay (ms)", kBottomMargin, kTopMargin);
   plot->SetTitle("Network Delay Change.");
 }
 }  // namespace plotting
 }  // namespace webrtc