Default enable QUIC's Cubic in bytes congestion control implementation. Protected by ENABLED FLAGS…

net/quic/core/quic_sent_packet_manager.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/core/quic_sent_packet_manager.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/logging.h"
@@ skipping 106 matching lines @@
   }
   if (config.HasReceivedConnectionOptions() &&
       ContainsQuicTag(config.ReceivedConnectionOptions(), kRENO)) {
     if (ContainsQuicTag(config.ReceivedConnectionOptions(), kBYTE)) {
       SetSendAlgorithm(kRenoBytes);
     } else {
       SetSendAlgorithm(kReno);
     }
   } else if (config.HasReceivedConnectionOptions() &&
              ContainsQuicTag(config.ReceivedConnectionOptions(), kBYTE)) {
-    SetSendAlgorithm(kCubicBytes);
+    if (FLAGS_quic_default_enable_cubic_bytes) {
+      SetSendAlgorithm(kCubic);
+    } else {
+      SetSendAlgorithm(kCubicBytes);
+    }
   }
   using_pacing_ = !FLAGS_quic_disable_pacing_for_perf_tests;
 
   if (config.HasClientSentConnectionOption(k1CON, perspective_)) {
     send_algorithm_->SetNumEmulatedConnections(1);
   }
   if (config.HasClientSentConnectionOption(kNCON, perspective_)) {
     n_connection_simulation_ = true;
   }
   if (config.HasClientSentConnectionOption(kNTLP, perspective_)) {
@@ skipping 873 matching lines @@
 
 void QuicSentPacketManager::RemoveObsoletePackets() {
   unacked_packets_.RemoveObsoletePackets();
 }
 
 void QuicSentPacketManager::OnApplicationLimited() {
   send_algorithm_->OnApplicationLimited(unacked_packets_.bytes_in_flight());
 }
 
 }  // namespace net