Detect if user closes the pref-pane without disabling Chromoting

remoting/host/plugin/daemon_controller_mac.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 "remoting/host/plugin/daemon_controller.h"
 
 #include <launch.h>
 #include <stdio.h>
 #include <sys/types.h>
 
@@ skipping 330 matching lines @@
       CFNotificationSuspensionBehaviorDeliverImmediately);
 }
 
 void DaemonControllerMac::PreferencePaneCallbackDelegate(CFStringRef name) {
   AsyncResult result = RESULT_FAILED;
   if (CFStringCompare(name, CFSTR(kUpdateSucceededNotificationName), 0) ==
           kCFCompareEqualTo) {
     result = RESULT_OK;
   } else if (CFStringCompare(name, CFSTR(kUpdateFailedNotificationName), 0) ==
           kCFCompareEqualTo) {
-    result = RESULT_CANCELLED;
+    result = RESULT_FAILED;
   } else {
     LOG(WARNING) << "Ignoring unexpected notification: " << name;
     return;
   }
   DCHECK(!current_callback_.is_null());
   current_callback_.Run(result);
   current_callback_.Reset();
   DeregisterForPreferencePaneNotifications();
 }
 
@@ skipping 10 matching lines @@
   }
 }
 
 }  // namespace
 
 scoped_ptr<DaemonController> remoting::DaemonController::Create() {
   return scoped_ptr<DaemonController>(new DaemonControllerMac());
 }
 
 }  // namespace remoting