Add abstract interfaces for the transport layer.

remoting/protocol/pepper_channel.h

-// Copyright (c) 2011 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 REMOTING_PROTOCOL_PEPPER_CHANNEL_H_
-#define REMOTING_PROTOCOL_PEPPER_CHANNEL_H_
-
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/non_thread_safe.h"
-
-namespace pp {
-class Instance;
-}  // namespace pp
-
-namespace cricket {
-class Candidate;
-}  // namespace cricket
-
-namespace remoting {
-namespace protocol {
-
-class ChannelAuthenticator;
-struct TransportConfig;
-
-// Interface for stream and datagram channels used by PepperSession.
-class PepperChannel : public base::NonThreadSafe {
- public:
-  PepperChannel() { }
-  virtual ~PepperChannel() { }
-
-  // Connect the channel using specified |config|. The specified
-  // |authenticator| is used to authenticate the channel.
-  virtual void Connect(pp::Instance* pp_instance,
-                       const TransportConfig& config,
-                       scoped_ptr<ChannelAuthenticator> authenticator) = 0;
-
-  // Adds |candidate| received from the peer.
-  virtual void AddRemoteCandidate(const cricket::Candidate& candidate) = 0;
-
-  // Name of the channel.
-  virtual const std::string& name() const = 0;
-
-  // Returns true if the channel is already connected.
-  virtual bool is_connected() const = 0;
-
- protected:
-  DISALLOW_COPY_AND_ASSIGN(PepperChannel);
-};
-
-}  // namespace protocol
-}  // namespace remoting
-
-#endif  // REMOTING_PROTOCOL_PEPPER_CHANNEL_H_