Add support for dynamic channels in WebrtcTransport.

remoting/protocol/webrtc_data_stream_adapter.h

Index: remoting/protocol/webrtc_data_stream_adapter.h
diff --git a/remoting/protocol/webrtc_data_stream_adapter.h b/remoting/protocol/webrtc_data_stream_adapter.h
index 90ad8f5627d485f0428057d1c9d23e8995889a0c..01c83de760b59392747c189ab5c292da2ed526ca 100644
--- a/remoting/protocol/webrtc_data_stream_adapter.h
+++ b/remoting/protocol/webrtc_data_stream_adapter.h
@@ -28,8 +28,7 @@ class WebrtcDataStreamAdapter : public MessageChannelFactory {
  public:
   typedef base::Callback<void(ErrorCode)> ErrorCallback;
 
-  explicit WebrtcDataStreamAdapter(bool outgoing,
-                                   const ErrorCallback& error_callback);
+  explicit WebrtcDataStreamAdapter(const ErrorCallback& error_callback);
   ~WebrtcDataStreamAdapter() override;
 
   // Initializes the adapter for |peer_connection|. If |outgoing| is set to true
@@ -39,7 +38,9 @@ class WebrtcDataStreamAdapter : public MessageChannelFactory {
       rtc::scoped_refptr<webrtc::PeerConnectionInterface> peer_connection);
 
   // Called by WebrtcTransport.
-  void OnIncomingDataChannel(webrtc::DataChannelInterface* data_channel);
+  void WrapIncomingDataChannel(
+      rtc::scoped_refptr<webrtc::DataChannelInterface> data_channel,
+      const ChannelCreatedCallback& callback);
 
   // MessageChannelFactory interface.
   void CreateChannel(const std::string& name,
@@ -52,10 +53,13 @@ class WebrtcDataStreamAdapter : public MessageChannelFactory {
 
   struct PendingChannel;
 
+  void AddPendingChannel(
+      rtc::scoped_refptr<webrtc::DataChannelInterface> data_channel,
+      const ChannelCreatedCallback& callback);
+
   void OnChannelConnected(Channel* channel);
   void OnChannelError();
 
-  const bool outgoing_;
   ErrorCallback error_callback_;
 
   rtc::scoped_refptr<webrtc::PeerConnectionInterface> peer_connection_;