Clean up the pretty-printing of QUIC frames to be internally consistent.

net/quic/quic_protocol.h

 // Copyright (c) 2012 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_QUIC_PROTOCOL_H_
 #define NET_QUIC_QUIC_PROTOCOL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 762 matching lines @@
 };
 
 typedef QuicPacketPublicHeader QuicVersionNegotiationPacket;
 
 // A padding frame contains no payload.
 struct NET_EXPORT_PRIVATE QuicPaddingFrame {
   QuicPaddingFrame() : num_padding_bytes(-1) {}
   explicit QuicPaddingFrame(int num_padding_bytes)
       : num_padding_bytes(num_padding_bytes) {}
 
+  NET_EXPORT_PRIVATE friend std::ostream& operator<<(std::ostream& os,
+                                                     const QuicPaddingFrame& s);
+
   // -1: full padding to the end of a max-sized packet
   // otherwise: only pad up to num_padding_bytes bytes
   int num_padding_bytes;
 };
 
 // A ping frame contains no payload, though it is retransmittable,
 // and ACK'd just like other normal frames.
 struct NET_EXPORT_PRIVATE QuicPingFrame {};
 
 // A path MTU discovery frame contains no payload and is serialized as a ping
@@ skipping 695 matching lines @@
       : iov(iov), iov_count(iov_count), total_length(total_length) {}
 
   const struct iovec* iov;
   const int iov_count;
   const size_t total_length;
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_QUIC_PROTOCOL_H_