fix wrong implementation of AimdRateControl::TimeToReduceFurther.

webrtc/modules/remote_bitrate_estimator/aimd_rate_control.h

Index: webrtc/modules/remote_bitrate_estimator/aimd_rate_control.h
diff --git a/webrtc/modules/remote_bitrate_estimator/aimd_rate_control.h b/webrtc/modules/remote_bitrate_estimator/aimd_rate_control.h
index 6e5410dd00f96a08193cf2640f89622809f345a7..944a6e91b8017975c6b548741e8f6293adad7035 100644
--- a/webrtc/modules/remote_bitrate_estimator/aimd_rate_control.h
+++ b/webrtc/modules/remote_bitrate_estimator/aimd_rate_control.h
@@ -32,7 +32,7 @@ class AimdRateControl {
   void SetMinBitrate(int min_bitrate_bps);
   int64_t GetFeedbackInterval() const;
   // Returns true if the bitrate estimate hasn't been changed for more than
-  // an RTT, or if the incoming_bitrate is more than 5% above the current
+  // an RTT, or if the incoming_bitrate is already lower (5%) than the current
   // estimate. Should be used to decide if we should reduce the rate further
   // when over-using.
   bool TimeToReduceFurther(int64_t time_now,