relnote: Add a new RstStreamErrorCode for resetting streams due to push stream is unclaimed and tim…

net/quic/core/quic_client_promised_info.cc

Index: net/quic/core/quic_client_promised_info.cc
diff --git a/net/quic/core/quic_client_promised_info.cc b/net/quic/core/quic_client_promised_info.cc
index 8c6703884b3442969096bced6d53bf190943397c..6024bd5403e68750d2bfd431c6a31c3624c63903 100644
--- a/net/quic/core/quic_client_promised_info.cc
+++ b/net/quic/core/quic_client_promised_info.cc
@@ -25,7 +25,11 @@ QuicClientPromisedInfo::~QuicClientPromisedInfo() {}
 
 void QuicClientPromisedInfo::CleanupAlarm::OnAlarm() {
   DVLOG(1) << "self GC alarm for stream " << promised_->id_;
-  promised_->Reset(QUIC_STREAM_CANCELLED);
+  if (FLAGS_quic_send_push_stream_timed_out_error) {
+    promised_->Reset(QUIC_PUSH_STREAM_TIMED_OUT);
+  } else {
+    promised_->Reset(QUIC_STREAM_CANCELLED);
+  }
 }
 
 void QuicClientPromisedInfo::Init() {