Change the wire format of the ack frame to include a compressed version

net/quic/quic_received_packet_manager.h

Index: net/quic/quic_received_packet_manager.h
diff --git a/net/quic/quic_received_packet_manager.h b/net/quic/quic_received_packet_manager.h
index 92c08f55c14113d182e388df2a352fc1e3e90156..57a1175d28e9dc7b482b88ec482322ef961132fc 100644
--- a/net/quic/quic_received_packet_manager.h
+++ b/net/quic/quic_received_packet_manager.h
@@ -11,6 +11,7 @@
 #include <deque>
 
 #include "net/quic/congestion_control/receive_algorithm_interface.h"
+#include "net/quic/quic_config.h"
 #include "net/quic/quic_framer.h"
 #include "net/quic/quic_protocol.h"
 
@@ -94,8 +95,7 @@ class NET_EXPORT_PRIVATE QuicReceivedPacketManager :
     DISALLOW_COPY_AND_ASSIGN(EntropyTracker);
   };
 
-  explicit QuicReceivedPacketManager(CongestionFeedbackType congestion_type,
-                                     QuicConnectionStats* stats);
+  explicit QuicReceivedPacketManager(QuicConnectionStats* stats);
   virtual ~QuicReceivedPacketManager();
 
   // Updates the internal state concerning which packets have been received.
@@ -172,6 +172,8 @@ class NET_EXPORT_PRIVATE QuicReceivedPacketManager :
 
   QuicConnectionStats* stats_;
 
+  PacketTimeList received_packet_times_;
+
   DISALLOW_COPY_AND_ASSIGN(QuicReceivedPacketManager);
 };