Update BWE_TEST_LOGGING_PLOT output format, and fix plot_dynamics.py script.

webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.h

Index: webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.h
diff --git a/webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.h b/webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.h
index 1fe3a228e4b27db33fd5067b29521cfa745a67ae..5683d434ade450baf049c44aa78feb3c3b115f9e 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.h
+++ b/webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.h
@@ -230,16 +230,16 @@ class RateCounterFilter : public PacketProcessor {
   RateCounterFilter(PacketProcessorListener* listener,
                     int flow_id,
                     const char* name,
-                    const std::string& plot_name);
+                    const std::string& algorithm_name);
   RateCounterFilter(PacketProcessorListener* listener,
                     const FlowIds& flow_ids,
                     const char* name,
-                    const std::string& plot_name);
+                    const std::string& algorithm_name);
   RateCounterFilter(PacketProcessorListener* listener,
                     const FlowIds& flow_ids,
                     const char* name,
                     int64_t start_plotting_time_ms,
-                    const std::string& plot_name);
+                    const std::string& algorithm_name);
   virtual ~RateCounterFilter();
 
   void LogStats();
@@ -250,10 +250,11 @@ class RateCounterFilter : public PacketProcessor {
  private:
   Stats<double> packets_per_second_stats_;
   Stats<double> kbps_stats_;
-  std::string name_;
   int64_t start_plotting_time_ms_;
+  int flow_id_;
+  std::string name_;
   // Algorithm name if single flow, Total link utilization if all flows.
-  std::string plot_name_;
+  std::string algorithm_name_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(RateCounterFilter);
 };