Connect to DesktopEnvironment's stubs only when audio/video schedulers are about to be created.

remoting/host/chromoting_host_unittest.cc

 // 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.
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop_proxy.h"
 #include "remoting/base/auto_thread_task_runner.h"
 #include "remoting/capturer/video_frame_capturer_fake.h"
@@ skipping 226 matching lines @@
     scoped_refptr<ClientSession> client = new ClientSession(
         host_.get(),
         ui_task_runner_,  // Audio
         ui_task_runner_,  // Video capture
         ui_task_runner_,  // Video encode
         ui_task_runner_,  // Network
         connection.Pass(),
         desktop_environment_factory_.get(),
         base::TimeDelta());
     connection_ptr->set_host_stub(client);
-    connection_ptr->set_input_stub(
-        client->desktop_environment()->event_executor());
 
     ui_task_runner_->PostTask(
         FROM_HERE, base::Bind(&ChromotingHostTest::AddClientToHost,
                               host_, client));
 
     if (authenticate) {
       ui_task_runner_->PostTask(
           FROM_HERE, base::Bind(&ClientSession::OnConnectionAuthenticated,
                                 client, connection_ptr));
       if (!reject) {
@@ skipping 431 matching lines @@
   ExpectClientDisconnected(0, true, video_packet_sent,
       InvokeWithoutArgs(this, &ChromotingHostTest::ShutdownHost));
   EXPECT_CALL(host_status_observer_, OnShutdown());
 
   host_->Start(xmpp_login_);
   SimulateClientConnection(0, true, false);
   message_loop_.Run();
 }
 
 }  // namespace remoting