diff --git a/quic/core/quic_crypto_stream.h b/quic/core/quic_crypto_stream.h
index e38b3f8..357303a 100644
--- a/quic/core/quic_crypto_stream.h
+++ b/quic/core/quic_crypto_stream.h
@@ -80,6 +80,9 @@
   // Provides the message parser to use when data is received on this stream.
   virtual CryptoMessageParser* crypto_message_parser() = 0;
 
+  // Called when a packet of encryption |level| has been successfully decrypted.
+  virtual void OnPacketDecrypted(EncryptionLevel level) = 0;
+
   // Returns the maximum number of bytes that can be buffered at a particular
   // encryption level |level|.
   virtual size_t BufferSizeLimitForLevel(EncryptionLevel level) const;