diff --git a/quic/core/quic_framer.h b/quic/core/quic_framer.h
index c749f04..5cfba86 100644
--- a/quic/core/quic_framer.h
+++ b/quic/core/quic_framer.h
@@ -1103,11 +1103,13 @@
 // Look for and parse the error code from the "<quic_error_code>:" text that
 // may be present at the start of the CONNECTION_CLOSE error details string.
 // This text, inserted by the peer if it's using Google's QUIC implementation,
-// contains additional error information that narrows down the exact error. If
-// the string is not found, or is not properly formed, it returns
-// ErrorCode::QUIC_IETF_GQUIC_ERROR_MISSING
-QUIC_EXPORT_PRIVATE QuicErrorCode
-MaybeExtractQuicErrorCode(QuicStringPiece error_details);
+// contains additional error information that narrows down the exact error. The
+// extracted error code and (possibly updated) error_details string are returned
+// in |*frame|. If an error code is not found in the error details then the
+// extracted_error_code is set to QuicErrorCode::QUIC_IETF_GQUIC_ERROR_MISSING.
+// If there is an error code in the string then it is removed from the string.
+QUIC_EXPORT_PRIVATE void MaybeExtractQuicErrorCode(
+    QuicConnectionCloseFrame* frame);
 
 }  // namespace quic