gfe-relnote: (n/a) Add quic platform api to create BBRv2 sender, currently the implementation just creates a BBRv1 sender. No behavior change, not protected.

Merge note: third_party/quic/platform/impl/quic_bbr2_sender_impl.h needs to be copied to Chromium.

PiperOrigin-RevId: 252890529
Change-Id: I72b44e189675b397bb67bfd84e4bbb23cab11fcf

quic/core/congestion_control/send_algorithm_interface.cc

diff --git a/quic/core/congestion_control/send_algorithm_interface.cc b/quic/core/congestion_control/send_algorithm_interface.cc
index 0b3c6c8..b641eb4 100644
--- a/quic/core/congestion_control/send_algorithm_interface.cc
+++ b/quic/core/congestion_control/send_algorithm_interface.cc
@@ -7,6 +7,7 @@
 #include "net/third_party/quiche/src/quic/core/congestion_control/bbr_sender.h"
 #include "net/third_party/quiche/src/quic/core/congestion_control/tcp_cubic_sender_bytes.h"
 #include "net/third_party/quiche/src/quic/core/quic_packets.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_bbr2_sender.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_bug_tracker.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_fallthrough.h"
 #include "net/third_party/quiche/src/quic/platform/api/quic_flag_utils.h"
@@ -33,6 +34,10 @@
       return new BbrSender(clock->ApproximateNow(), rtt_stats, unacked_packets,
                            initial_congestion_window, max_congestion_window,
                            random, stats);
+    case kBBRv2:
+      return new QuicBbr2Sender(clock->ApproximateNow(), rtt_stats,
+                                unacked_packets, initial_congestion_window,
+                                max_congestion_window, random, stats);
     case kPCC:
       if (GetQuicReloadableFlag(quic_enable_pcc3)) {
         return CreatePccSender(clock, rtt_stats, unacked_packets, random, stats,

quic/core/quic_types.h

diff --git a/quic/core/quic_types.h b/quic/core/quic_types.h
index 66a90c1..7a83495 100644
--- a/quic/core/quic_types.h
+++ b/quic/core/quic_types.h
@@ -368,7 +368,14 @@
 // QUIC. Note that this is separate from the congestion feedback type -
 // some congestion control algorithms may use the same feedback type
 // (Reno and Cubic are the classic example for that).
-enum CongestionControlType { kCubicBytes, kRenoBytes, kBBR, kPCC, kGoogCC };
+enum CongestionControlType {
+  kCubicBytes,
+  kRenoBytes,
+  kBBR,
+  kPCC,
+  kGoogCC,
+  kBBRv2,
+};
 
 enum LossDetectionType : uint8_t {
   kNack,          // Used to mimic TCP's loss detection.

quic/platform/api/quic_bbr2_sender.h

diff --git a/quic/platform/api/quic_bbr2_sender.h b/quic/platform/api/quic_bbr2_sender.h
new file mode 100644
index 0000000..48bc86a
--- /dev/null
+++ b/quic/platform/api/quic_bbr2_sender.h
@@ -0,0 +1,16 @@
+// Copyright (c) 2019 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.
+
+#ifndef QUICHE_QUIC_PLATFORM_API_QUIC_BBR2_SENDER_H_
+#define QUICHE_QUIC_PLATFORM_API_QUIC_BBR2_SENDER_H_
+
+#include "net/quic/platform/impl/quic_bbr2_sender_impl.h"
+
+namespace quic {
+
+using QuicBbr2Sender = QuicBbr2SenderImpl;
+
+}  // namespace quic
+
+#endif  // QUICHE_QUIC_PLATFORM_API_QUIC_BBR2_SENDER_H_