Move histogram for number of pause events to per stream.

webrtc/video/send_statistics_proxy.h

Index: webrtc/video/send_statistics_proxy.h
diff --git a/webrtc/video/send_statistics_proxy.h b/webrtc/video/send_statistics_proxy.h
index 934dab2f93e1f3af28d1f7f37084fcc1297b7760..ac52a52fcf965bcf987e562c28dacd0bdbaba24d 100644
--- a/webrtc/video/send_statistics_proxy.h
+++ b/webrtc/video/send_statistics_proxy.h
@@ -111,30 +111,38 @@ class SendStatisticsProxy : public CpuOveruseMetricsObserver,
     SampleCounter() : sum(0), num_samples(0) {}
     ~SampleCounter() {}
     void Add(int sample);
-    int Avg(int min_required_samples) const;
+    int Avg(int64_t min_required_samples) const;
 
    private:
-    int sum;
-    int num_samples;
+    int64_t sum;
+    int64_t num_samples;
   };
   class BoolSampleCounter {
    public:
     BoolSampleCounter() : sum(0), num_samples(0) {}
     ~BoolSampleCounter() {}
     void Add(bool sample);
-    int Percent(int min_required_samples) const;
-    int Permille(int min_required_samples) const;
+    void Add(bool sample, int64_t count);
+    int Percent(int64_t min_required_samples) const;
+    int Permille(int64_t min_required_samples) const;
 
    private:
-    int Fraction(int min_required_samples, float multiplier) const;
-    int sum;
-    int num_samples;
+    int Fraction(int64_t min_required_samples, float multiplier) const;
+    int64_t sum;
+    int64_t num_samples;
   };
   struct StatsUpdateTimes {
     StatsUpdateTimes() : resolution_update_ms(0), bitrate_update_ms(0) {}
     int64_t resolution_update_ms;
     int64_t bitrate_update_ms;
   };
+  struct TargetRateUpdates {
+    TargetRateUpdates()
+        : pause_resume_events(0), last_paused_or_resumed(false), last_ms(-1) {}
+    int pause_resume_events;
+    bool last_paused_or_resumed;
+    int64_t last_ms;
+  };
   struct QpCounters {
     SampleCounter vp8;   // QP range: 0-127
     SampleCounter vp9;   // QP range: 0-255
@@ -189,6 +197,8 @@ class SendStatisticsProxy : public CpuOveruseMetricsObserver,
     RateCounter sent_fps_counter_;
     int64_t first_rtcp_stats_time_ms_;
     int64_t first_rtp_stats_time_ms_;
+    BoolSampleCounter paused_time_counter_;
+    TargetRateUpdates target_rate_updates_;
     ReportBlockStats report_block_stats_;
     const VideoSendStream::Stats start_stats_;
     std::map<int, QpCounters>