Deprecate FLAGS_quic_reloadable_flag_quic_no_socket_receive_buffer.

net/quic/core/quic_config.cc

Index: net/quic/core/quic_config.cc
diff --git a/net/quic/core/quic_config.cc b/net/quic/core/quic_config.cc
index 9a29d94b1dfe0ea2bbe4c46b3e0a71b6901ee7ee..97936491a367bc62e1e965603258f7d00344d1dd 100644
--- a/net/quic/core/quic_config.cc
+++ b/net/quic/core/quic_config.cc
@@ -341,9 +341,7 @@ QuicConfig::QuicConfig()
       connection_migration_disabled_(kNCMR, PRESENCE_OPTIONAL),
       alternate_server_address_(kASAD, PRESENCE_OPTIONAL),
       force_hol_blocking_(kFHL2, PRESENCE_OPTIONAL),
-      support_max_header_list_size_(kSMHL, PRESENCE_OPTIONAL),
-      latched_no_socket_receive_buffer_(
-          FLAGS_quic_reloadable_flag_quic_no_socket_receive_buffer) {
+      support_max_header_list_size_(kSMHL, PRESENCE_OPTIONAL) {
   SetDefaults();
 }
 
@@ -544,22 +542,6 @@ uint32_t QuicConfig::ReceivedInitialSessionFlowControlWindowBytes() const {
   return initial_session_flow_control_window_bytes_.GetReceivedValue();
 }
 
-void QuicConfig::SetSocketReceiveBufferToSend(uint32_t tcp_receive_window) {
-  if (latched_no_socket_receive_buffer_) {
-    QUIC_FLAG_COUNT_N(quic_reloadable_flag_quic_no_socket_receive_buffer, 1, 3);
-  } else {
-    socket_receive_buffer_.SetSendValue(tcp_receive_window);
-  }
-}
-
-bool QuicConfig::HasReceivedSocketReceiveBuffer() const {
-  return socket_receive_buffer_.HasReceivedValue();
-}
-
-uint32_t QuicConfig::ReceivedSocketReceiveBuffer() const {
-  return socket_receive_buffer_.GetReceivedValue();
-}
-
 void QuicConfig::SetDisableConnectionMigration() {
   connection_migration_disabled_.SetSendValue(1);
 }
@@ -638,11 +620,6 @@ void QuicConfig::ToHandshakeMessage(CryptoHandshakeMessage* out) const {
   initial_round_trip_time_us_.ToHandshakeMessage(out);
   initial_stream_flow_control_window_bytes_.ToHandshakeMessage(out);
   initial_session_flow_control_window_bytes_.ToHandshakeMessage(out);
-  if (latched_no_socket_receive_buffer_) {
-    QUIC_FLAG_COUNT_N(quic_reloadable_flag_quic_no_socket_receive_buffer, 2, 3);
-  } else {
-    socket_receive_buffer_.ToHandshakeMessage(out);
-  }
   connection_migration_disabled_.ToHandshakeMessage(out);
   connection_options_.ToHandshakeMessage(out);
   alternate_server_address_.ToHandshakeMessage(out);
@@ -689,12 +666,6 @@ QuicErrorCode QuicConfig::ProcessPeerHello(
     error = initial_session_flow_control_window_bytes_.ProcessPeerHello(
         peer_hello, hello_type, error_details);
   }
-  if (latched_no_socket_receive_buffer_) {
-    QUIC_FLAG_COUNT_N(quic_reloadable_flag_quic_no_socket_receive_buffer, 3, 3);
-  } else if (error == QUIC_NO_ERROR) {
-    error = socket_receive_buffer_.ProcessPeerHello(peer_hello, hello_type,
-                                                    error_details);
-  }
   if (error == QUIC_NO_ERROR) {
     error = connection_migration_disabled_.ProcessPeerHello(
         peer_hello, hello_type, error_details);