Update from chromium https://crrev.com/301725/

net/quic/crypto/chacha20_poly1305_encrypter.h

Index: net/quic/crypto/chacha20_poly1305_encrypter.h
diff --git a/net/quic/crypto/chacha20_poly1305_encrypter.h b/net/quic/crypto/chacha20_poly1305_encrypter.h
index 1dcfd7cb87b5c10264bd4b4faf560c183fd84db5..6504970929ba786763176dbbbbbba8ef90043a50 100644
--- a/net/quic/crypto/chacha20_poly1305_encrypter.h
+++ b/net/quic/crypto/chacha20_poly1305_encrypter.h
@@ -32,10 +32,10 @@ class NET_EXPORT_PRIVATE ChaCha20Poly1305Encrypter : public AeadBaseEncrypter {
 #if !defined(USE_OPENSSL)
  protected:
   // AeadBaseEncrypter methods:
-  virtual void FillAeadParams(base::StringPiece nonce,
-                              base::StringPiece associated_data,
-                              size_t auth_tag_size,
-                              AeadParams* aead_params) const override;
+  void FillAeadParams(base::StringPiece nonce,
+                      base::StringPiece associated_data,
+                      size_t auth_tag_size,
+                      AeadParams* aead_params) const override;
 #endif
 
  private: