Make variable for selecting if intervals without samples should be included in stats configurable (…

webrtc/video/stats_counter.h

Index: webrtc/video/stats_counter.h
diff --git a/webrtc/video/stats_counter.h b/webrtc/video/stats_counter.h
index 477e38e9007742204d9bbb14fa5a1f2090d053af..c272b6278d0961b69362748ab7272ba5c4b2af71 100644
--- a/webrtc/video/stats_counter.h
+++ b/webrtc/video/stats_counter.h
@@ -191,7 +191,9 @@ class PermilleCounter : public StatsCounter {
 //
 class RateCounter : public StatsCounter {
  public:
-  RateCounter(Clock* clock, StatsCounterObserver* observer);
+  RateCounter(Clock* clock,
+              StatsCounterObserver* observer,
+              bool include_empty_intervals);
   ~RateCounter() override {}
 
   void Add(int sample);
@@ -211,7 +213,9 @@ class RateCounter : public StatsCounter {
 //
 class RateAccCounter : public StatsCounter {
  public:
-  RateAccCounter(Clock* clock, StatsCounterObserver* observer);
+  RateAccCounter(Clock* clock,
+                 StatsCounterObserver* observer,
+                 bool include_empty_intervals);
   ~RateAccCounter() override {}
 
   void Set(int sample);