Revert 194560 "[SPDY] Replace SpdyIOBuffer with new SpdyBuffer c..."

trunk/src/net/spdy/spdy_buffer.h

-// Copyright (c) 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_SPDY_SPDY_BUFFER_H_
-#define NET_SPDY_SPDY_BUFFER_H_
-
-#include <cstddef>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "net/base/net_export.h"
-
-namespace net {
-
-class IOBuffer;
-class SpdyFrame;
-
-// SpdyBuffer is a class to hold data read from or to be written to a
-// SPDY connection. It is similar to a DrainableIOBuffer but is not
-// ref-counted and will include a way to get notified when Consume()
-// is called.
-//
-// NOTE(akalin): This explicitly does not inherit from IOBuffer to
-// avoid the needless ref-counting and to avoid working around the
-// fact that IOBuffer member functions are not virtual.
-class NET_EXPORT_PRIVATE SpdyBuffer {
- public:
-  // Construct with the data in the given frame. Assumes that data is
-  // owned by |frame| or outlives it.
-  explicit SpdyBuffer(scoped_ptr<SpdyFrame> frame);
-
-  // Construct with a copy of the given raw data. |data| must be
-  // non-NULL and |size| must be non-zero.
-  SpdyBuffer(const char* data, size_t size);
-
-  ~SpdyBuffer();
-
-  // Returns the remaining (unconsumed) data.
-  const char* GetRemainingData() const;
-
-  // Returns the number of remaining (unconsumed) bytes.
-  size_t GetRemainingSize() const;
-
-  // Consume the given number of bytes, which must be positive but not
-  // greater than GetRemainingSize().
-  //
-  // TODO(akalin): Add a way to get notified when Consume() is called.
-  void Consume(size_t consume_size);
-
-  // Returns an IOBuffer pointing to the data starting at
-  // GetRemainingData(). Use with care; the returned IOBuffer must not
-  // be used past the lifetime of this object, and it is not updated
-  // when Consume() is called.
-  IOBuffer* GetIOBufferForRemainingData();
-
- private:
-  const scoped_ptr<SpdyFrame> frame_;
-  size_t offset_;
-
-  DISALLOW_COPY_AND_ASSIGN(SpdyBuffer);
-};
-
-}  // namespace net
-
-#endif  // NET_SPDY_SPDY_BUFFER_H_