Inline QUIC ack and stop waiting processing, because it's only called from one location each.

net/quic/core/quic_connection.h

Index: net/quic/core/quic_connection.h
diff --git a/net/quic/core/quic_connection.h b/net/quic/core/quic_connection.h
index 0c458186e7e86f4ab1caec5f44efc8830f2ff24f..ba3faf2f24204135a5b3ce2590247eda78cab892 100644
--- a/net/quic/core/quic_connection.h
+++ b/net/quic/core/quic_connection.h
@@ -794,10 +794,6 @@ class QUIC_EXPORT_PRIVATE QuicConnection
   // Attempts to process any queued undecryptable packets.
   void MaybeProcessUndecryptablePackets();
 
-  void ProcessAckFrame(const QuicAckFrame& incoming_ack);
-
-  void ProcessStopWaitingFrame(const QuicStopWaitingFrame& stop_waiting);
-
   // Sends any packets which are a response to the last packet, including both
   // acks and pending writes if an ack opened the congestion window.
   void MaybeSendInResponseToPacket();