Move shared files in net/quic/ into net/quic/core/

net/quic/quic_packet_writer.h

-// Copyright 2013 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_PACKET_WRITER_H_
-#define NET_QUIC_QUIC_PACKET_WRITER_H_
-
-#include <stddef.h>
-
-#include "net/base/ip_endpoint.h"
-#include "net/quic/quic_protocol.h"
-
-namespace net {
-
-class IPAddress;
-struct WriteResult;
-
-class NET_EXPORT_PRIVATE PerPacketOptions {
- public:
-  PerPacketOptions() = default;
-  virtual ~PerPacketOptions() {}
-
-  // Returns a heap-allocated copy of |this|.
-  virtual PerPacketOptions* Clone() const = 0;
-
- private:
-  PerPacketOptions(PerPacketOptions&& other) = delete;
-  PerPacketOptions& operator=(PerPacketOptions&& other) = delete;
-
-  DISALLOW_COPY_AND_ASSIGN(PerPacketOptions);
-};
-
-// An interface between writers and the entity managing the
-// socket (in our case the QuicDispatcher).  This allows the Dispatcher to
-// control writes, and manage any writers who end up write blocked.
-class NET_EXPORT_PRIVATE QuicPacketWriter {
- public:
-  virtual ~QuicPacketWriter() {}
-
-  // Sends the packet out to the peer, with some optional per-packet options.
-  // If the write succeeded, the result's status is WRITE_STATUS_OK and
-  // bytes_written is populated. If the write failed, the result's status is
-  // WRITE_STATUS_BLOCKED or WRITE_STATUS_ERROR and error_code is populated.
-  // Options must be either null, or created for the particular QuicPacketWriter
-  // implementation. Options may be ignored, depending on the implementation.
-  virtual WriteResult WritePacket(const char* buffer,
-                                  size_t buf_len,
-                                  const IPAddress& self_address,
-                                  const IPEndPoint& peer_address,
-                                  PerPacketOptions* options) = 0;
-
-  // Returns true if the writer buffers and subsequently rewrites data
-  // when an attempt to write results in the underlying socket becoming
-  // write blocked.
-  virtual bool IsWriteBlockedDataBuffered() const = 0;
-
-  // Returns true if the network socket is not writable.
-  virtual bool IsWriteBlocked() const = 0;
-
-  // Records that the socket has become writable, for example when an EPOLLOUT
-  // is received or an asynchronous write completes.
-  virtual void SetWritable() = 0;
-
-  // Returns the maximum size of the packet which can be written using this
-  // writer for the supplied peer address.  This size may actually exceed the
-  // size of a valid QUIC packet.
-  virtual QuicByteCount GetMaxPacketSize(
-      const IPEndPoint& peer_address) const = 0;
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_PACKET_WRITER_H_