Reland of: Separating SCTP code from BaseChannel/MediaChannel.

webrtc/media/base/hybriddataengine.h

-/*
- *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-#ifndef WEBRTC_MEDIA_BASE_HYBRIDDATAENGINE_H_
-#define WEBRTC_MEDIA_BASE_HYBRIDDATAENGINE_H_
-
-#include <memory>
-#include <string>
-#include <vector>
-
-#include "webrtc/media/base/codec.h"
-#include "webrtc/media/base/mediachannel.h"
-#include "webrtc/media/base/mediaengine.h"
-
-namespace cricket {
-
-class HybridDataEngine : public DataEngineInterface {
- public:
-  // Takes ownership.
-  HybridDataEngine(DataEngineInterface* first,
-                   DataEngineInterface* second)
-      : first_(first),
-        second_(second) {
-    codecs_ = first_->data_codecs();
-    codecs_.insert(
-        codecs_.end(),
-        second_->data_codecs().begin(),
-        second_->data_codecs().end());
-  }
-
-  virtual DataMediaChannel* CreateChannel(DataChannelType data_channel_type,
-                                          const MediaConfig& config) {
-    DataMediaChannel* channel = NULL;
-    if (first_) {
-      channel = first_->CreateChannel(data_channel_type, config);
-    }
-    if (!channel && second_) {
-      channel = second_->CreateChannel(data_channel_type, config);
-    }
-    return channel;
-  }
-
-  virtual const std::vector<DataCodec>& data_codecs() { return codecs_; }
-
- private:
-  std::unique_ptr<DataEngineInterface> first_;
-  std::unique_ptr<DataEngineInterface> second_;
-  std::vector<DataCodec> codecs_;
-};
-
-}  // namespace cricket
-
-#endif  // WEBRTC_MEDIA_BASE_HYBRIDDATAENGINE_H_