Deprecate SPDY/3.1 and draft HTTP/2 enum values.

net/socket/next_proto.h

Index: net/socket/next_proto.h
diff --git a/net/socket/next_proto.h b/net/socket/next_proto.h
index 8b6c394e45d448504a0a2313826a3f927a00bb64..8f90b44b5547b8036e6709dbab1b7c9a6e1b4166 100644
--- a/net/socket/next_proto.h
+++ b/net/socket/next_proto.h
@@ -22,30 +22,18 @@ const int kProtoSPDYHistogramOffset = 100;
 enum NextProto {
   kProtoUnknown = 0,
   kProtoHTTP11 = 1,
-  kProtoMinimumVersion = kProtoHTTP11,
-
-  kProtoSPDY31 = 102,
-  kProtoSPDYMinimumVersion = kProtoSPDY31,
+  // kProtoSPDY31 = 102,
   // kProtoHTTP2_14 = 103,  // HTTP/2 draft-14
   // kProtoHTTP2_15 = 104,  // HTTP/2 draft-15
   // kProtoHTTP2_16 = 105,  // HTTP/2 draft-16
   // kProtoHTTP2_17 = 106,  // HTTP/2 draft-17
   kProtoHTTP2 = 107,  // HTTP/2, see https://tools.ietf.org/html/rfc7540.
-  kProtoSPDYMaximumVersion = kProtoHTTP2,
-
   kProtoQUIC1SPDY3 = 200,
-
-  kProtoMaximumVersion = kProtoQUIC1SPDY3,
 };
 
 // List of protocols to use for NPN, used for configuring HttpNetworkSessions.
 typedef std::vector<NextProto> NextProtoVector;
 
-// Convenience functions to create NextProtoVector.
-
-// Returns true if |next_proto| is a version of SPDY or HTTP/2.
-bool NextProtoIsSPDY(NextProto next_proto);
-
 }  // namespace net
 
 #endif  // NET_SOCKET_NEXT_PROTO_H_