[Chromoting] Let the Windows IT2Me host send clipboard events to the client.

remoting/host/chromoting_host.cc

Index: remoting/host/chromoting_host.cc
diff --git a/remoting/host/chromoting_host.cc b/remoting/host/chromoting_host.cc
index ae5a02ba9b1e9e6269ba0ce9c64be3e214300a33..00c9469007591b2546142755b01a06275c72f65b 100644
--- a/remoting/host/chromoting_host.cc
+++ b/remoting/host/chromoting_host.cc
@@ -230,7 +230,7 @@ void ChromotingHost::OnSessionChannelsConnected(ClientSession* client) {
   // Immediately add the connection and start the session.
   recorder_->AddConnection(client->connection());
   recorder_->Start();
-  desktop_environment_->OnSessionStarted();
+  desktop_environment_->OnSessionStarted(client->CreateClipboardProxy());
 }
 
 void ChromotingHost::OnSessionAuthenticationFailed(ClientSession* client) {