Rate limit the low bandwidth / min bitrate warning to once every 10 seconds.

webrtc/modules/bitrate_controller/send_side_bandwidth_estimation_unittest.cc

 /*
  *  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 10 matching lines @@
   bwe.SetMinMaxBitrate(100000, 1500000);
   bwe.SetSendBitrate(200000);
 
   const int kRembBps = 1000000;
   const int kSecondRembBps = kRembBps + 500000;
   int64_t now_ms = 0;
 
   bwe.UpdateReceiverBlock(0, 50, 1, now_ms);
 
   // Initial REMB applies immediately.
-  bwe.UpdateReceiverEstimate(kRembBps);
+  bwe.UpdateReceiverEstimate(now_ms, kRembBps);
   bwe.UpdateEstimate(now_ms);
   int bitrate;
   uint8_t fraction_loss;
   int64_t rtt;
   bwe.CurrentEstimate(&bitrate, &fraction_loss, &rtt);
   EXPECT_EQ(kRembBps, bitrate);
 
   // Second REMB doesn't apply immediately.
   now_ms += 2001;
-  bwe.UpdateReceiverEstimate(kSecondRembBps);
+  bwe.UpdateReceiverEstimate(now_ms, kSecondRembBps);
   bwe.UpdateEstimate(now_ms);
   bitrate = 0;
   bwe.CurrentEstimate(&bitrate, &fraction_loss, &rtt);
   EXPECT_EQ(kRembBps, bitrate);
 }
 }  // namespace webrtc