Added implementation of three classes in BBR,with unit-tests.

webrtc/modules/remote_bitrate_estimator/test/estimators/min_rtt_filter.h

Index: webrtc/modules/remote_bitrate_estimator/test/estimators/min_rtt_filter.h
diff --git a/webrtc/modules/remote_bitrate_estimator/test/estimators/min_rtt_filter.h b/webrtc/modules/remote_bitrate_estimator/test/estimators/min_rtt_filter.h
index f41a4f0dad57ef9426094c4f51305649fa372e87..e74e04f58f83dbde876db6c0617a8aee5e4bda20 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/estimators/min_rtt_filter.h
+++ b/webrtc/modules/remote_bitrate_estimator/test/estimators/min_rtt_filter.h
@@ -12,6 +12,8 @@
 #ifndef WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_ESTIMATORS_MIN_RTT_FILTER_H_
 #define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_ESTIMATORS_MIN_RTT_FILTER_H_
 
+#include <cstdint>
+
 namespace webrtc {
 namespace testing {
 namespace bwe {
@@ -19,13 +21,21 @@ class MinRttFilter {
  public:
   MinRttFilter();
   ~MinRttFilter();
-  int64_t min_rtt();
+  int64_t min_rtt() { return min_rtt_; }

[philipel, 2017/07/06 12:15:16]

Add newline between line 23 24.

[gnish1, 2017/07/07 13:43:34]

Done.

   void UpdateMinRtt(int64_t min_rtt);
+  void set_discovery_time(int64_t discovery_time) {
+    discovery_time_ = discovery_time;
+  }
+  int64_t discovery_time() { return discovery_time_; }
 
   // Checks whether or not last discovered min_rtt value is older than x
   // seconds.
   bool MinRttExpired(int64_t now);
   void set_min_rtt_discovery_time(int64_t discovery_time);
+
+ private:
+  int64_t min_rtt_;
+  int64_t discovery_time_;
 };
 }  // namespace bwe
 }  // namespace testing