Remove event_channel() and control_channel() from Session interface.

remoting/protocol/client_event_dispatcher.cc

Index: remoting/protocol/client_event_dispatcher.cc
diff --git a/remoting/protocol/client_event_dispatcher.cc b/remoting/protocol/client_event_dispatcher.cc
index 60c5d43e9383b43fd23df5f54ee9d0ae77a52858..c0da8373f2cdcf2e8cf08aa8149e35b3edcbd1cf 100644
--- a/remoting/protocol/client_event_dispatcher.cc
+++ b/remoting/protocol/client_event_dispatcher.cc
@@ -6,28 +6,28 @@
 
 #include "base/message_loop_proxy.h"
 #include "base/time.h"
+#include "net/socket/stream_socket.h"
+#include "remoting/base/constants.h"
 #include "remoting/proto/event.pb.h"
 #include "remoting/proto/internal.pb.h"
 #include "remoting/protocol/buffered_socket_writer.h"
-#include "remoting/protocol/session.h"
 #include "remoting/protocol/util.h"
 
 namespace remoting {
 namespace protocol {
 
 ClientEventDispatcher::ClientEventDispatcher()
-    : writer_(new BufferedSocketWriter(base::MessageLoopProxy::current())) {
+    : ChannelDispatcherBase(kEventChannelName),
+      writer_(new BufferedSocketWriter(base::MessageLoopProxy::current())) {
 }
 
 ClientEventDispatcher::~ClientEventDispatcher() {
   writer_->Close();
 }
 
-void ClientEventDispatcher::Init(Session* session) {
-  DCHECK(session);
-
+void ClientEventDispatcher::OnInitialized() {
   // TODO(garykac): Set write failed callback.
-  writer_->Init(session->event_channel(),
+  writer_->Init(channel(),
                 BufferedSocketWriter::WriteFailedCallback());
 }