[SPDY] Replace SpdyIOBuffer with new SpdyBuffer class

net/spdy/spdy_buffer_producer.cc

+// 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.
+
+#include "net/spdy/spdy_buffer_producer.h"
+
+#include "base/logging.h"
+#include "net/spdy/spdy_buffer.h"
+#include "net/spdy/spdy_protocol.h"
+
+namespace net {
+
+SpdyBufferProducer::SpdyBufferProducer() {}
+
+SpdyBufferProducer::~SpdyBufferProducer() {}
+
+SimpleBufferProducer::SimpleBufferProducer(scoped_ptr<SpdyBuffer> buffer)
+    : buffer_(buffer.Pass()) {}
+
+SimpleBufferProducer::~SimpleBufferProducer() {}
+
+scoped_ptr<SpdyBuffer> SimpleBufferProducer::ProduceBuffer() {
+  DCHECK(buffer_);
+  return buffer_.Pass();
+}
+
+}  // namespace net