Update from chromium https://crrev.com/302282

net/quic/quic_sent_packet_manager.cc

Index: net/quic/quic_sent_packet_manager.cc
diff --git a/net/quic/quic_sent_packet_manager.cc b/net/quic/quic_sent_packet_manager.cc
index c0041978a2fd498319dc1a88dc3d7e7482f25ee5..553e7e2f69a188ed7a7c2bb78c34323ab5741cf7 100644
--- a/net/quic/quic_sent_packet_manager.cc
+++ b/net/quic/quic_sent_packet_manager.cc
@@ -78,6 +78,7 @@ QuicSentPacketManager::QuicSentPacketManager(
                                                      congestion_control_type,
                                                      stats)),
       loss_algorithm_(LossDetectionInterface::Create(loss_type)),
+      receive_buffer_bytes_(kDefaultSocketReceiveBuffer),
       least_packet_awaited_by_peer_(1),
       first_rto_transmission_(0),
       consecutive_rto_count_(0),
@@ -103,7 +104,8 @@ void QuicSentPacketManager::SetFromConfig(const QuicConfig& config) {
             config.GetInitialRoundTripTimeUsToSend()));
   }
   // TODO(ianswett): BBR is currently a server only feature.
-  if (config.HasReceivedConnectionOptions() &&
+  if (FLAGS_quic_allow_bbr &&
+      config.HasReceivedConnectionOptions() &&
       ContainsQuicTag(config.ReceivedConnectionOptions(), kTBBR)) {
     if (FLAGS_quic_recent_min_rtt_window_s > 0) {
       rtt_stats_.set_recent_min_rtt_window(
@@ -123,10 +125,18 @@ void QuicSentPacketManager::SetFromConfig(const QuicConfig& config) {
   if (HasClientSentConnectionOption(config, k1CON)) {
     send_algorithm_->SetNumEmulatedConnections(1);
   }
+  if (HasClientSentConnectionOption(config, kNTLP)) {
+    max_tail_loss_probes_ = 0;
+  }
   if (config.HasReceivedConnectionOptions() &&
       ContainsQuicTag(config.ReceivedConnectionOptions(), kTIME)) {
     loss_algorithm_.reset(LossDetectionInterface::Create(kTime));
   }
+  if (config.HasReceivedSocketReceiveBuffer()) {
+    receive_buffer_bytes_ =
+        max(kMinSocketReceiveBuffer,
+            static_cast<QuicByteCount>(config.ReceivedSocketReceiveBuffer()));
+  }
   send_algorithm_->SetFromConfig(config, is_server_);
 
   if (network_change_visitor_ != nullptr) {
@@ -664,8 +674,9 @@ QuicSentPacketManager::RetransmissionTimeoutMode
 void QuicSentPacketManager::OnIncomingQuicCongestionFeedbackFrame(
     const QuicCongestionFeedbackFrame& frame,
     const QuicTime& feedback_receive_time) {
-  send_algorithm_->OnIncomingQuicCongestionFeedbackFrame(
-      frame, feedback_receive_time);
+  if (frame.type == kTCP) {
+    receive_buffer_bytes_ = frame.tcp.receive_window;
+  }
 }
 
 void QuicSentPacketManager::InvokeLossDetection(QuicTime time) {
@@ -730,6 +741,9 @@ QuicTime::Delta QuicSentPacketManager::TimeUntilSend(
   if (pending_timer_transmission_count_ > 0) {
     return QuicTime::Delta::Zero();
   }
+  if (unacked_packets_.bytes_in_flight() >= receive_buffer_bytes_) {
+    return QuicTime::Delta::Infinite();
+  }
   return send_algorithm_->TimeUntilSend(
       now, unacked_packets_.bytes_in_flight(), retransmittable);
 }