Create QUIC_VERSION_16 which breaks the sent_info field out of the ACK

net/quic/quic_protocol.h

Index: net/quic/quic_protocol.h
diff --git a/net/quic/quic_protocol.h b/net/quic/quic_protocol.h
index 393295e233fa49b6f5298ab106f883dd11c99e1e..23b6038ed15f0f4191ef7ad5148c8208e45afd6b 100644
--- a/net/quic/quic_protocol.h
+++ b/net/quic/quic_protocol.h
@@ -155,6 +155,7 @@ enum QuicFrameType {
   GOAWAY_FRAME = 3,
   WINDOW_UPDATE_FRAME = 4,
   BLOCKED_FRAME = 5,
+  STOP_WAITING_FRAME = 6,
 
   // STREAM, ACK, and CONGESTION_FEEDBACK frames are special frames. They are
   // encoded differently on the wire and their values do not need to be stable.
@@ -255,7 +256,8 @@ enum QuicVersion {
   QUIC_VERSION_12 = 12,
   QUIC_VERSION_13 = 13,
   QUIC_VERSION_14 = 14,
-  QUIC_VERSION_15 = 15,  // Current version.
+  QUIC_VERSION_15 = 15,
+  QUIC_VERSION_16 = 16,  // Current version.
 };
 
 // This vector contains QUIC versions which we currently support.
@@ -265,7 +267,8 @@ enum QuicVersion {
 //
 // IMPORTANT: if you are addding to this list, follow the instructions at
 // http://sites/quic/adding-and-removing-versions
-static const QuicVersion kSupportedQuicVersions[] = {QUIC_VERSION_15,
+static const QuicVersion kSupportedQuicVersions[] = {QUIC_VERSION_16,
+                                                     QUIC_VERSION_15,
                                                      QUIC_VERSION_14,
                                                      QUIC_VERSION_13,
                                                      QUIC_VERSION_12};
@@ -376,6 +379,8 @@ enum QuicErrorCode {
   QUIC_INVALID_WINDOW_UPDATE_DATA = 57,
   // BLOCKED frame data is malformed.
   QUIC_INVALID_BLOCKED_DATA = 58,
+  // STOP_WAITING frame data is malformed.
+  QUIC_INVALID_STOP_WAITING_DATA = 60,
   // ACK frame data is malformed.
   QUIC_INVALID_ACK_DATA = 9,
   // CONGESTION_FEEDBACK frame data is malformed.
@@ -481,7 +486,7 @@ enum QuicErrorCode {
   QUIC_VERSION_NEGOTIATION_MISMATCH = 55,
 
   // No error. Used as bound while iterating.
-  QUIC_LAST_ERROR = 60,
+  QUIC_LAST_ERROR = 61,
 };
 
 struct NET_EXPORT_PRIVATE QuicPacketPublicHeader {
@@ -627,12 +632,13 @@ void NET_EXPORT_PRIVATE InsertMissingPacketsBetween(
     QuicPacketSequenceNumber lower,
     QuicPacketSequenceNumber higher);
 
-struct NET_EXPORT_PRIVATE SentPacketInfo {
-  SentPacketInfo();
-  ~SentPacketInfo();
+struct NET_EXPORT_PRIVATE QuicStopWaitingFrame {
+  QuicStopWaitingFrame();
+  ~QuicStopWaitingFrame();
 
   NET_EXPORT_PRIVATE friend std::ostream& operator<<(
-      std::ostream& os, const SentPacketInfo& s);
+      std::ostream& os, const QuicStopWaitingFrame& s);
+
   // Entropy hash of all packets up to, but not including, the least unacked
   // packet.
   QuicPacketEntropyHash entropy_hash;
@@ -651,7 +657,7 @@ struct NET_EXPORT_PRIVATE QuicAckFrame {
   NET_EXPORT_PRIVATE friend std::ostream& operator<<(
       std::ostream& os, const QuicAckFrame& s);
 
-  SentPacketInfo sent_info;
+  QuicStopWaitingFrame sent_info;
   ReceivedPacketInfo received_info;
 };
 
@@ -800,6 +806,7 @@ struct NET_EXPORT_PRIVATE QuicFrame {
   explicit QuicFrame(QuicCongestionFeedbackFrame* frame);
   explicit QuicFrame(QuicRstStreamFrame* frame);
   explicit QuicFrame(QuicConnectionCloseFrame* frame);
+  explicit QuicFrame(QuicStopWaitingFrame* frame);
   explicit QuicFrame(QuicGoAwayFrame* frame);
   explicit QuicFrame(QuicWindowUpdateFrame* frame);
   explicit QuicFrame(QuicBlockedFrame* frame);
@@ -813,6 +820,7 @@ struct NET_EXPORT_PRIVATE QuicFrame {
     QuicStreamFrame* stream_frame;
     QuicAckFrame* ack_frame;
     QuicCongestionFeedbackFrame* congestion_feedback_frame;
+    QuicStopWaitingFrame* stop_waiting_frame;
     QuicRstStreamFrame* rst_stream_frame;
     QuicConnectionCloseFrame* connection_close_frame;
     QuicGoAwayFrame* goaway_frame;