Simplify channel creation callbacks in remoting::Session interface.

remoting/protocol/fake_session.cc

Index: remoting/protocol/fake_session.cc
diff --git a/remoting/protocol/fake_session.cc b/remoting/protocol/fake_session.cc
index a2496a7a674efd4c58e0a09207348cc2604561c7..65792089ca6685e8f4facc6fa180e4ed6e2a331f 100644
--- a/remoting/protocol/fake_session.cc
+++ b/remoting/protocol/fake_session.cc
@@ -210,17 +210,16 @@ void FakeSession::SetStateChangeCallback(StateChangeCallback* callback) {
 
 void FakeSession::CreateStreamChannel(
     const std::string& name, const StreamChannelCallback& callback) {
-  LOG(ERROR) << " creating channel " << name;
   FakeSocket* channel = new FakeSocket();
   stream_channels_[name] = channel;
-  callback.Run(name, channel);
+  callback.Run(channel);
 }
 
 void FakeSession::CreateDatagramChannel(
     const std::string& name, const DatagramChannelCallback& callback) {
   FakeUdpSocket* channel = new FakeUdpSocket();
   datagram_channels_[name] = channel;
-  callback.Run(name, channel);
+  callback.Run(channel);
 }
 
 FakeSocket* FakeSession::control_channel() {