| Index: net/quic/core/frames/quic_ack_frame.h | 
| diff --git a/net/quic/core/frames/quic_ack_frame.h b/net/quic/core/frames/quic_ack_frame.h | 
| index 1875e425b3d2f5c3faa5bd5c4be1733c46c90dd9..9e76aee8dc738373335da009a65e5235194bc4b6 100644 | 
| --- a/net/quic/core/frames/quic_ack_frame.h | 
| +++ b/net/quic/core/frames/quic_ack_frame.h | 
| @@ -5,6 +5,7 @@ | 
| #ifndef NET_QUIC_CORE_FRAMES_QUIC_ACK_FRAME_H_ | 
| #define NET_QUIC_CORE_FRAMES_QUIC_ACK_FRAME_H_ | 
|  | 
| +#include <ostream> | 
| #include <string> | 
|  | 
| #include "base/strings/string_piece.h" | 
|  |