Update from https://crrev.com/316786

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 27 matching lines @@
   // the current thread when ready.
   //
   // Only a single callback can be outstanding at a given time and, in the
   // event that WaitForDataReady returns OK, it's the caller's responsibility
   // to delete |callback|.
   //
   // |callback| may be NULL, in which case ERR_IO_PENDING may still be returned
   // but, obviously, a callback will never be made.
   virtual int WaitForDataReady(const CompletionCallback& callback) = 0;
 
+  // Reset's WaitForDataReady callback. This method shouldn't have any side
+  // effects (could be called even if HttpCache doesn't exist).
+  virtual void ResetWaitForDataReadyCallback() = 0;
+
   // Cancel's WaitForDataReady callback. |callback| passed in WaitForDataReady
   // will not be called.
   virtual void CancelWaitForDataReadyCallback() = 0;
 
   // Returns true if data is loaded from disk cache and ready (WaitForDataReady
   // doesn't have a pending callback).
   virtual bool IsDataReady() = 0;
 
   // Returns true if the object is ready to persist data, in other words, if
   // data is loaded from disk cache and ready and there are no pending writes.
@@ skipping 73 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_