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diff --git a/third_party/libwebrtc/rtc_tools/rtc_event_log_visualizer/analyzer.h b/third_party/libwebrtc/rtc_tools/rtc_event_log_visualizer/analyzer.h
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+++ b/third_party/libwebrtc/rtc_tools/rtc_event_log_visualizer/analyzer.h
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+/*
+ *  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.
+ */
+
+#ifndef RTC_TOOLS_RTC_EVENT_LOG_VISUALIZER_ANALYZER_H_
+#define RTC_TOOLS_RTC_EVENT_LOG_VISUALIZER_ANALYZER_H_
+
+#include <map>
+#include <memory>
+#include <set>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "logging/rtc_event_log/rtc_event_log_parser.h"
+#include "modules/audio_coding/neteq/tools/neteq_stats_getter.h"
+#include "rtc_base/strings/string_builder.h"
+#include "rtc_tools/rtc_event_log_visualizer/analyzer_common.h"
+#include "rtc_tools/rtc_event_log_visualizer/plot_base.h"
+
+namespace webrtc {
+
+class EventLogAnalyzer {
+ public:
+  // The EventLogAnalyzer keeps a reference to the ParsedRtcEventLogNew for the
+  // duration of its lifetime. The ParsedRtcEventLogNew must not be destroyed or
+  // modified while the EventLogAnalyzer is being used.
+  EventLogAnalyzer(const ParsedRtcEventLog& log, bool normalize_time);
+  EventLogAnalyzer(const ParsedRtcEventLog& log, const AnalyzerConfig& config);
+
+  void CreatePacketGraph(PacketDirection direction, Plot* plot);
+
+  void CreateRtcpTypeGraph(PacketDirection direction, Plot* plot);
+
+  void CreateAccumulatedPacketsGraph(PacketDirection direction, Plot* plot);
+
+  void CreatePacketRateGraph(PacketDirection direction, Plot* plot);
+
+  void CreateTotalPacketRateGraph(PacketDirection direction, Plot* plot);
+
+  void CreatePlayoutGraph(Plot* plot);
+
+  void CreateNetEqSetMinimumDelay(Plot* plot);
+
+  void CreateAudioLevelGraph(PacketDirection direction, Plot* plot);
+
+  void CreateSequenceNumberGraph(Plot* plot);
+
+  void CreateIncomingPacketLossGraph(Plot* plot);
+
+  void CreateIncomingDelayGraph(Plot* plot);
+
+  void CreateFractionLossGraph(Plot* plot);
+
+  void CreateTotalIncomingBitrateGraph(Plot* plot);
+  void CreateTotalOutgoingBitrateGraph(Plot* plot,
+                                       bool show_detector_state = false,
+                                       bool show_alr_state = false,
+                                       bool show_link_capacity = false);
+
+  void CreateStreamBitrateGraph(PacketDirection direction, Plot* plot);
+  void CreateBitrateAllocationGraph(PacketDirection direction, Plot* plot);
+
+  void CreateGoogCcSimulationGraph(Plot* plot);
+  void CreateSendSideBweSimulationGraph(Plot* plot);
+  void CreateReceiveSideBweSimulationGraph(Plot* plot);
+
+  void CreateNetworkDelayFeedbackGraph(Plot* plot);
+  void CreatePacerDelayGraph(Plot* plot);
+
+  void CreateTimestampGraph(PacketDirection direction, Plot* plot);
+  void CreateSenderAndReceiverReportPlot(
+      PacketDirection direction,
+      rtc::FunctionView<float(const rtcp::ReportBlock&)> fy,
+      std::string title,
+      std::string yaxis_label,
+      Plot* plot);
+
+  void CreateIceCandidatePairConfigGraph(Plot* plot);
+  void CreateIceConnectivityCheckGraph(Plot* plot);
+
+  void CreateDtlsTransportStateGraph(Plot* plot);
+  void CreateDtlsWritableStateGraph(Plot* plot);
+
+  void CreateTriageNotifications();
+  void PrintNotifications(FILE* file);
+
+ private:
+  template <typename IterableType>
+  void CreateAccumulatedPacketsTimeSeries(Plot* plot,
+                                          const IterableType& packets,
+                                          const std::string& label);
+
+  std::string GetCandidatePairLogDescriptionFromId(uint32_t candidate_pair_id);
+
+  const ParsedRtcEventLog& parsed_log_;
+
+  // A list of SSRCs we are interested in analysing.
+  // If left empty, all SSRCs will be considered relevant.
+  std::vector<uint32_t> desired_ssrc_;
+
+  std::map<uint32_t, std::string> candidate_pair_desc_by_id_;
+
+  AnalyzerConfig config_;
+};
+
+}  // namespace webrtc
+
+#endif  // RTC_TOOLS_RTC_EVENT_LOG_VISUALIZER_ANALYZER_H_