Make overuse estimator one dimensional.

webrtc/modules/remote_bitrate_estimator/overuse_detector.cc

Index: webrtc/modules/remote_bitrate_estimator/overuse_detector.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/overuse_detector.cc b/webrtc/modules/remote_bitrate_estimator/overuse_detector.cc
index 62bb2e1cac4b6c3bbebf51ec2c8ed1a03013b49d..e8967ad0362e962b6d8c5601b3ba3eb916173df5 100644
--- a/webrtc/modules/remote_bitrate_estimator/overuse_detector.cc
+++ b/webrtc/modules/remote_bitrate_estimator/overuse_detector.cc
@@ -50,12 +50,11 @@ bool ReadExperimentConstants(double* k_up, double* k_down) {
                 "%lf,%lf", k_up, k_down) == 2;
 }
 
-OveruseDetector::OveruseDetector(const OverUseDetectorOptions& options)
+OveruseDetector::OveruseDetector()
     : in_experiment_(AdaptiveThresholdExperimentIsEnabled()),
       k_up_(0.01),
       k_down_(0.00018),
       overusing_time_threshold_(100),
-      options_(options),
       threshold_(12.5),
       last_update_ms_(-1),
       prev_offset_(0.0),