fix coding and documentary ambiguity in AimdRateControl::TimeToReduceFurther.

webrtc/modules/remote_bitrate_estimator/aimd_rate_control.h

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 14 matching lines @@
  public:
   AimdRateControl();
   virtual ~AimdRateControl() {}
 
   // Returns true if there is a valid estimate of the incoming bitrate, false
   // otherwise.
   bool ValidEstimate() const;
   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 less than half of the current
   // estimate. Should be used to decide if we should reduce the rate further
   // when over-using.
   bool TimeToReduceFurther(int64_t time_now,
                            uint32_t incoming_bitrate_bps) const;
   uint32_t LatestEstimate() const;
   uint32_t UpdateBandwidthEstimate(int64_t now_ms);
   void SetRtt(int64_t rtt);
   void Update(const RateControlInput* input, int64_t now_ms);
   void SetEstimate(int bitrate_bps, int64_t now_ms);
 
@@ skipping 36 matching lines @@
   int64_t time_first_incoming_estimate_;
   bool bitrate_is_initialized_;
   float beta_;
   int64_t rtt_;
   bool in_experiment_;
   rtc::Optional<int> last_decrease_;
 };
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_AIMD_RATE_CONTROL_H_