Various formatting cleanups to net/quic/core/frames

net/quic/core/frames/quic_path_close_frame.h

 // Copyright (c) 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_QUIC_CORE_FRAMES_QUIC_PATH_CLOSE_FRAME_H_
 #define NET_QUIC_CORE_FRAMES_QUIC_PATH_CLOSE_FRAME_H_
 
+#include <ostream>
+
 #include "net/quic/core/quic_types.h"
 #include "net/quic/platform/api/quic_export.h"
 
 namespace net {
 
 // The PATH_CLOSE frame is used to explicitly close a path. Both endpoints can
 // send a PATH_CLOSE frame to initiate a path termination. A path is considered
 // to be closed either a PATH_CLOSE frame is sent or received. An endpoint drops
 // receive side of a closed path, and packets with retransmittable frames on a
 // closed path are marked as retransmissions which will be transmitted on other
 // paths.
 struct QUIC_EXPORT_PRIVATE QuicPathCloseFrame {
   QuicPathCloseFrame() {}
   explicit QuicPathCloseFrame(QuicPathId path_id);
 
   friend QUIC_EXPORT_PRIVATE std::ostream& operator<<(
       std::ostream& os,
       const QuicPathCloseFrame& p);
 
   QuicPathId path_id;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_FRAMES_QUIC_PATH_CLOSE_FRAME_H_