relnote: add connection option "SPSH" to indicate whether client wants to do server push or not, wh…

net/quic/crypto/crypto_protocol.h

Index: net/quic/crypto/crypto_protocol.h
diff --git a/net/quic/crypto/crypto_protocol.h b/net/quic/crypto/crypto_protocol.h
index 532f80356ad87f3736608ba24b969e0121edf39f..32be7038769c01c86dbba0e82f1cb2976fb3b6b4 100644
--- a/net/quic/crypto/crypto_protocol.h
+++ b/net/quic/crypto/crypto_protocol.h
@@ -176,6 +176,9 @@ const QuicTag kRSEQ = TAG('R', 'S', 'E', 'Q');   // Rejected packet number
 // Universal tags
 const QuicTag kPAD  = TAG('P', 'A', 'D', '\0');  // Padding
 
+// Server push tags
+const QuicTag kSPSH = TAG('S', 'P', 'S', 'H');  // Support server push.
+
 // Sent by clients with the fix to crbug/566156
 const QuicTag kFIXD = TAG('F', 'I', 'X', 'D');   // Client hello
 // clang-format on