Tune BWE to be more sensitive on low capacity networks.

webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc

Index: webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
diff --git a/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc b/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
index ec008ffb7ffdbc916691c98e03f1fac44701c844..7feaeedf4c5fba30654ba8ff36d0b3b12cf9a16c 100644
--- a/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
+++ b/webrtc/modules/remote_bitrate_estimator/test/estimators/nada_unittest.cc
@@ -170,7 +170,7 @@ class NadaFbGenerator {
 TEST_F(NadaSenderSideTest, AcceleratedRampUp) {
   const int64_t kRefSignalMs = 1;
   const int64_t kOneWayDelayMs = 50;
-  int original_bitrate = 2 * kMinBitrateKbps;
+  int original_bitrate = 2 * NadaBweSender::kMinNadaBitrateKbps;
   size_t receiving_rate = static_cast<size_t>(original_bitrate);
   int64_t send_time_ms = nada_sender_.NowMs() - kOneWayDelayMs;
 
@@ -202,7 +202,7 @@ TEST_F(NadaSenderSideTest, AcceleratedRampUp) {
 // Verify if AcceleratedRampDown is called and if bitrate decreases.
 TEST_F(NadaSenderSideTest, AcceleratedRampDown) {
   const int64_t kOneWayDelayMs = 50;
-  int original_bitrate = 3 * kMinBitrateKbps;
+  int original_bitrate = 3 * NadaBweSender::kMinNadaBitrateKbps;
   size_t receiving_rate = static_cast<size_t>(original_bitrate);
   int64_t send_time_ms = nada_sender_.NowMs() - kOneWayDelayMs;
 
@@ -219,7 +219,8 @@ TEST_F(NadaSenderSideTest, AcceleratedRampDown) {
   // Updates the bitrate according to the receiving rate and other constant
   // parameters.
   nada_sender_.AcceleratedRampDown(congested_fb);
-  int bitrate_2_kbps = std::max(nada_sender_.bitrate_kbps(), kMinBitrateKbps);
+  int bitrate_2_kbps =
+      std::max(nada_sender_.bitrate_kbps(), NadaBweSender::kMinNadaBitrateKbps);
   EXPECT_EQ(bitrate_2_kbps, bitrate_1_kbps);
 }
 
@@ -227,7 +228,7 @@ TEST_F(NadaSenderSideTest, GradualRateUpdate) {
   const int64_t kDeltaSMs = 20;
   const int64_t kRefSignalMs = 20;
   const int64_t kOneWayDelayMs = 50;
-  int original_bitrate = 2 * kMinBitrateKbps;
+  int original_bitrate = 2 * NadaBweSender::kMinNadaBitrateKbps;
   size_t receiving_rate = static_cast<size_t>(original_bitrate);
   int64_t send_time_ms = nada_sender_.NowMs() - kOneWayDelayMs;
 
@@ -254,7 +255,8 @@ TEST_F(NadaSenderSideTest, GradualRateUpdate) {
 TEST_F(NadaSenderSideTest, VeryLowBandwith) {
   const int64_t kOneWayDelayMs = 50;
 
-  size_t receiving_rate = static_cast<size_t>(kMinBitrateKbps);
+  size_t receiving_rate =
+      static_cast<size_t>(NadaBweSender::kMinNadaBitrateKbps);
   int64_t send_time_ms = nada_sender_.NowMs() - kOneWayDelayMs;
 
   NadaFeedback extremely_congested_fb =
@@ -262,7 +264,7 @@ TEST_F(NadaSenderSideTest, VeryLowBandwith) {
   NadaFeedback congested_fb =
       NadaFbGenerator::CongestedFb(receiving_rate, send_time_ms);
 
-  nada_sender_.set_bitrate_kbps(5 * kMinBitrateKbps);
+  nada_sender_.set_bitrate_kbps(5 * NadaBweSender::kMinNadaBitrateKbps);
   nada_sender_.set_original_operating_mode(true);
   for (int i = 0; i < 100; ++i) {
     // Trigger GradualRateUpdate mode.
@@ -270,10 +272,10 @@ TEST_F(NadaSenderSideTest, VeryLowBandwith) {
   }
   // The original implementation doesn't allow the bitrate to stay at kMin,
   // even if the congestion signal is very high.
-  EXPECT_GE(nada_sender_.bitrate_kbps(), kMinBitrateKbps);
+  EXPECT_GE(nada_sender_.bitrate_kbps(), NadaBweSender::kMinNadaBitrateKbps);
 
   nada_sender_.set_original_operating_mode(false);
-  nada_sender_.set_bitrate_kbps(5 * kMinBitrateKbps);
+  nada_sender_.set_bitrate_kbps(5 * NadaBweSender::kMinNadaBitrateKbps);
 
   for (int i = 0; i < 1000; ++i) {
     int previous_bitrate = nada_sender_.bitrate_kbps();
@@ -281,7 +283,7 @@ TEST_F(NadaSenderSideTest, VeryLowBandwith) {
     nada_sender_.GiveFeedback(congested_fb);
     EXPECT_LE(nada_sender_.bitrate_kbps(), previous_bitrate);
   }
-  EXPECT_EQ(nada_sender_.bitrate_kbps(), kMinBitrateKbps);
+  EXPECT_EQ(nada_sender_.bitrate_kbps(), NadaBweSender::kMinNadaBitrateKbps);
 }
 
 // Sending bitrate should increase and reach its Max bound.
@@ -303,7 +305,7 @@ TEST_F(NadaSenderSideTest, VeryHighBandwith) {
   EXPECT_EQ(nada_sender_.bitrate_kbps(), kMaxBitrateKbps);
 
   nada_sender_.set_original_operating_mode(false);
-  nada_sender_.set_bitrate_kbps(kMinBitrateKbps);
+  nada_sender_.set_bitrate_kbps(NadaBweSender::kMinNadaBitrateKbps);
 
   for (int i = 0; i < 100; ++i) {
     int previous_bitrate = nada_sender_.bitrate_kbps();