Improve handling of NONE transport in channel configuration.

remoting/protocol/session_config.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 REMOTING_PROTOCOL_SESSION_CONFIG_H_
 #define REMOTING_PROTOCOL_SESSION_CONFIG_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 17 matching lines @@
   };
 
   enum Codec {
     CODEC_UNDEFINED,  // Used for event and control channels.
     CODEC_VERBATIM,
     CODEC_ZIP,
     CODEC_VP8,
     CODEC_VORBIS,
   };
 
+  // The constructor that creates a config with transport field set to
+  // TRANSPORT_NONE which indicates that corresponding channel is disabled.
   ChannelConfig();
+
+  // Creates a channel config with the specified parameters.
   ChannelConfig(TransportType transport, int version, Codec codec);
 
   // operator== is overloaded so that std::find() works with
   // std::vector<ChannelConfig>.
   bool operator==(const ChannelConfig& b) const;
 
-  void Reset();
-
   TransportType transport;
   int version;
   Codec codec;
 };
 
 // SessionConfig is used by the chromoting Session to store negotiated
 // chromotocol configuration.
 class SessionConfig {
  public:
   SessionConfig();
@@ skipping 108 matching lines @@
   std::vector<ChannelConfig> control_configs_;
   std::vector<ChannelConfig> event_configs_;
   std::vector<ChannelConfig> video_configs_;
   std::vector<ChannelConfig> audio_configs_;
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_SESSION_CONFIG_H_