relnote: QUIC header streams support to receive PUSH_PROMISE. Protected by --quic_supports_push_pr…

net/quic/quic_flags.cc

Index: net/quic/quic_flags.cc
diff --git a/net/quic/quic_flags.cc b/net/quic/quic_flags.cc
index e360ccf1eb7963b96f0f4993b08aa163fd9ef39a..cee399f995e0647a18f97b9db1dbdf1a59afce85 100644
--- a/net/quic/quic_flags.cc
+++ b/net/quic/quic_flags.cc
@@ -119,6 +119,9 @@ bool FLAGS_quic_require_fix = true;
 // If true, QUIC supports sending trailers from Server to Client.
 bool FLAGS_quic_supports_trailers = true;
 
+// If true, headers stream will support receiving PUSH_PROMISE frames.
+bool FLAGS_quic_supports_push_promise = true;
+
 // Fixes a bug in QUIC_VERSION_26 by always using the primary config when
 // getting the proof of possession.
 bool FLAGS_quic_use_primary_config_for_proof = true;