Move code in src/remoting to the new callbacks.

remoting/host/continue_window_linux.cc

 // Copyright (c) 2011 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 "remoting/host/continue_window.h"
 
 #include <gtk/gtk.h>
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
@@ skipping 79 matching lines @@
   if (continue_window_) {
     gtk_widget_destroy(continue_window_);
     continue_window_ = NULL;
   }
 }
 
 void ContinueWindowLinux::OnResponse(GtkWidget* dialog, int response_id) {
   if (response_id == GTK_RESPONSE_OK) {
     host_->PauseSession(false);
   } else {
-    host_->Shutdown(NULL);
+    host_->Shutdown(base::Closure());
   }
   Hide();
 }
 
 ContinueWindow* ContinueWindow::Create() {
   return new ContinueWindowLinux();
 }
 
 }  // namespace remoting