Include the socket receive buffer in the connection handshake.

net/quic/quic_config.h

Index: net/quic/quic_config.h
diff --git a/net/quic/quic_config.h b/net/quic/quic_config.h
index 376b2b05896f60893eb007dbdbd0b25a35cd52c8..3c5f5cdc16e7216da6dcff23930f0e475366212a 100644
--- a/net/quic/quic_config.h
+++ b/net/quic/quic_config.h
@@ -340,6 +340,15 @@ class NET_EXPORT_PRIVATE QuicConfig {
 
   uint32 ReceivedInitialSessionFlowControlWindowBytes() const;
 
+  // Sets socket receive buffer to transmit to the peer.
+  void SetSocketReceiveBufferToSend(uint32 window_bytes);
+
+  uint32 GetSocketReceiveBufferToSend() const;
+
+  bool HasReceivedSocketReceiveBuffer() const;
+
+  uint32 ReceivedSocketReceiveBuffer() const;
+
   bool negotiated();
 
   // SetDefaults sets the members to sensible, default values.
@@ -389,6 +398,9 @@ class NET_EXPORT_PRIVATE QuicConfig {
   QuicFixedUint32 initial_stream_flow_control_window_bytes_;
   // Initial session flow control receive window in bytes.
   QuicFixedUint32 initial_session_flow_control_window_bytes_;
+
+  // Socket receive buffer in bytes.
+  QuicFixedUint32 socket_receive_buffer_;
 };
 
 }  // namespace net