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

net/quic/quic_stream_sequencer_buffer_interface.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_STREAM_SEQUENCER_BUFFER_INTERFACE_H_
-#define NET_QUIC_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_
-
-#include <stddef.h>
-
-#include "net/quic/quic_protocol.h"
-
-namespace net {
-
-// The QuicStreamSequencer uses an implementation of this interface to store
-// received data.
-class NET_EXPORT_PRIVATE QuicStreamSequencerBufferInterface {
- public:
-  virtual ~QuicStreamSequencerBufferInterface() {}
-
-  // Free the space used to buffer data.
-  virtual void Clear() = 0;
-
-  // Returns true if there is nothing to read in this buffer.
-  virtual bool Empty() const = 0;
-
-  // Called to buffer new data received for this stream.  If the data was
-  // successfully buffered, returns QUIC_NO_ERROR and stores the number of
-  // bytes buffered in |bytes_buffered|. Returns an error otherwise.
-  // |timestamp| is the time the data arrived.
-  virtual QuicErrorCode OnStreamData(QuicStreamOffset offset,
-                                     base::StringPiece data,
-                                     QuicTime timestamp,
-                                     size_t* bytes_buffered) = 0;
-
-  // Reads from this buffer into given iovec array, up to number of iov_len
-  // iovec objects and returns the number of bytes read.
-  virtual size_t Readv(const struct iovec* iov, size_t iov_len) = 0;
-
-  // Returns the readable region of valid data in iovec format. The readable
-  // region is the buffer region where there is valid data not yet read by
-  // client.
-  // Returns the number of iovec entries in |iov| which were populated.
-  // If the region is empty, one iovec entry with 0 length
-  // is returned, and the function returns 0. If there are more readable
-  // regions than iov_size, the function only processes the first
-  // iov_size of them.
-  virtual int GetReadableRegions(struct iovec* iov, int iov_len) const = 0;
-
-  // Fills in one iovec with data which all arrived at the same time from the
-  // next readable region.
-  // Populates |timestamp| with the time that this data arrived.
-  // Returns false if there is no readable region available.
-  virtual bool GetReadableRegion(iovec* iov, QuicTime* timestamp) const = 0;
-
-  // Called after GetReadableRegions() to free up |bytes_used| space if these
-  // bytes are processed.
-  // Pre-requisite: bytes_used <= available bytes to read.
-  virtual bool MarkConsumed(size_t bytes_used) = 0;
-
-  // Deletes and records as consumed any buffered data and clear the buffer.
-  // (To be called only after sequencer's StopReading has been called.)
-  virtual size_t FlushBufferedFrames() = 0;
-
-  // Whether there are bytes can be read out.
-  virtual bool HasBytesToRead() const = 0;
-
-  // Count how many bytes have been consumed (read out of buffer).
-  virtual QuicStreamOffset BytesConsumed() const = 0;
-
-  // Count how many bytes are in buffer at this moment.
-  virtual size_t BytesBuffered() const = 0;
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_STREAM_SEQUENCER_BUFFER_INTERFACE_H_