Pulls out QuicConnection alarm cancellation into method. No behavior change.

net/quic/quic_connection.cc

Index: net/quic/quic_connection.cc
diff --git a/net/quic/quic_connection.cc b/net/quic/quic_connection.cc
index eed31e49865226f919e5243325fd4a9bc87a01d5..8162dea221ef2fdef684a1622f102c96d171e3ce 100644
--- a/net/quic/quic_connection.cc
+++ b/net/quic/quic_connection.cc
@@ -2046,6 +2046,10 @@ void QuicConnection::TearDownLocalConnectionState(
   }
   // Cancel the alarms so they don't trigger any action now that the
   // connection is closed.
+  CancelAllAlarms();
+}
+
+void QuicConnection::CancelAllAlarms() {
   ack_alarm_->Cancel();
   ping_alarm_->Cancel();
   resume_writes_alarm_->Cancel();