Update from https://crrev.com/304121

net/quic/crypto/quic_server_info.h

 // Copyright 2014 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_QUIC_SERVER_INFO_H_
 #define NET_QUIC_CRYPTO_QUIC_SERVER_INFO_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 46 matching lines @@
   // data is loaded from disk cache and ready and there are no pending writes.
   virtual bool IsReadyToPersist() = 0;
 
   // Persist allows for the server information to be updated for future users.
   // This is a fire and forget operation: the caller may drop its reference
   // from this object and the store operation will still complete. This can
   // only be called once WaitForDataReady has returned OK or called its
   // callback.
   virtual void Persist() = 0;
 
+  // Called whenever an external cache reuses quic server config.
+  virtual void OnExternalCacheHit() = 0;
+
   struct State {
     State();
     ~State();
 
     void Clear();
 
     // This class matches QuicClientCryptoConfig::CachedState.
     std::string server_config;         // A serialized handshake message.
     std::string source_address_token;  // An opaque proof of IP ownership.
     std::vector<std::string> certs;    // A list of certificates in leaf-first
@@ skipping 39 matching lines @@
   // GetForServer returns a fresh, allocated QuicServerInfo for the given
   // |server_id| or NULL on failure.
   virtual QuicServerInfo* GetForServer(const QuicServerId& server_id) = 0;
 
   DISALLOW_COPY_AND_ASSIGN(QuicServerInfoFactory);
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CRYPTO_QUIC_SERVER_INFO_H_