Update Token Binding code to the latest drafts

net/http/proxy_connect_redirect_http_stream.h

Index: net/http/proxy_connect_redirect_http_stream.h
diff --git a/net/http/proxy_connect_redirect_http_stream.h b/net/http/proxy_connect_redirect_http_stream.h
index 7368e1d7cb645b2166ca1c6a76b59b003b5e8aab..74505ba0f959f48915e2151e7b834cf9e8bbebb5 100644
--- a/net/http/proxy_connect_redirect_http_stream.h
+++ b/net/http/proxy_connect_redirect_http_stream.h
@@ -58,8 +58,9 @@ class ProxyConnectRedirectHttpStream : public HttpStream {
   void GetSSLInfo(SSLInfo* ssl_info) override;
   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;
   bool GetRemoteEndpoint(IPEndPoint* endpoint) override;
-  Error GetSignedEKMForTokenBinding(crypto::ECPrivateKey* key,
-                                    std::vector<uint8_t>* out) override;
+  Error GetTokenBindingSignature(crypto::ECPrivateKey* key,
+                                 TokenBindingType tb_type,
+                                 std::vector<uint8_t>* out) override;
   void Drain(HttpNetworkSession* session) override;
   void PopulateNetErrorDetails(NetErrorDetails* details) override;