Update from https://crrev.com/307330

net/quic/crypto/crypto_protocol.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_
 #define NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_
 
 #include <string>
 
 #include "net/base/net_export.h"
@@ skipping 76 matching lines @@
 const QuicTag kVER  = TAG('V', 'E', 'R', '\0');  // Version (new)
 const QuicTag kNONC = TAG('N', 'O', 'N', 'C');   // The client's nonce
 const QuicTag kKEXS = TAG('K', 'E', 'X', 'S');   // Key exchange methods
 const QuicTag kAEAD = TAG('A', 'E', 'A', 'D');   // Authenticated
                                                  // encryption algorithms
 const QuicTag kCGST = TAG('C', 'G', 'S', 'T');   // Congestion control
                                                  // feedback types
 const QuicTag kCOPT = TAG('C', 'O', 'P', 'T');   // Connection options
 const QuicTag kICSL = TAG('I', 'C', 'S', 'L');   // Idle connection state
                                                  // lifetime
-const QuicTag kKATO = TAG('K', 'A', 'T', 'O');   // Keepalive timeout
+const QuicTag kSCLS = TAG('S', 'C', 'L', 'S');   // Silently close on timeout
 const QuicTag kMSPC = TAG('M', 'S', 'P', 'C');   // Max streams per connection.
 const QuicTag kIRTT = TAG('I', 'R', 'T', 'T');   // Estimated initial RTT in us.
 const QuicTag kSWND = TAG('S', 'W', 'N', 'D');   // Server's Initial congestion
                                                  // window.
 const QuicTag kSNI  = TAG('S', 'N', 'I', '\0');  // Server name
                                                  // indication
 const QuicTag kPUBS = TAG('P', 'U', 'B', 'S');   // Public key values
 const QuicTag kSCID = TAG('S', 'C', 'I', 'D');   // Server config id
 const QuicTag kORBT = TAG('O', 'B', 'I', 'T');   // Server orbit.
 const QuicTag kPDMD = TAG('P', 'D', 'M', 'D');   // Proof demand.
@@ skipping 67 matching lines @@
 // amplification factor of any mirror DoS attack.
 //
 // A client may pad an inchoate client hello to a size larger than
 // kClientHelloMinimumSize to make it more likely to receive a complete
 // rejection message.
 const size_t kClientHelloMinimumSize = 1024;
 
 }  // namespace net
 
 #endif  // NET_QUIC_CRYPTO_CRYPTO_PROTOCOL_H_