Add get method for initial_retransmittable_on_wire_timeout, which is used by chromium only and accidentally removed in cl/275943283.

gfe-relnote: n/a, used by chromium only.
PiperOrigin-RevId: 276114779
Change-Id: Iced30a64c4a18b4fb5525881d703d3f5837e79af

quic/core/quic_connection.h

diff --git a/quic/core/quic_connection.h b/quic/core/quic_connection.h
index f333fe8..bcd9ff2 100644
--- a/quic/core/quic_connection.h
+++ b/quic/core/quic_connection.h
@@ -552,7 +552,7 @@
     DCHECK(!ping_alarm_->IsSet());
     ping_timeout_ = ping_timeout;
   }
-  const QuicTime::Delta ping_timeout() { return ping_timeout_; }
+  const QuicTime::Delta ping_timeout() const { return ping_timeout_; }
   // Used in Chromium, but not internally.
   // Sets an initial timeout for the ping alarm when there is no retransmittable
   // data in flight, allowing for a more aggressive ping alarm in that case.
@@ -561,6 +561,9 @@
     DCHECK(!ping_alarm_->IsSet());
     initial_retransmittable_on_wire_timeout_ = retransmittable_on_wire_timeout;
   }
+  const QuicTime::Delta initial_retransmittable_on_wire_timeout() const {
+    return initial_retransmittable_on_wire_timeout_;
+  }
   // Used in Chromium, but not internally.
   void set_creator_debug_delegate(QuicPacketCreator::DebugDelegate* visitor) {
     packet_generator_.set_debug_delegate(visitor);