Notify plugin when disabling daemon.

remoting/host/me2me_preference_pane.mm

Index: remoting/host/me2me_preference_pane.mm
diff --git a/remoting/host/me2me_preference_pane.mm b/remoting/host/me2me_preference_pane.mm
index 5dd127e32aac080d7ef7ec6a13625112f524b2e0..8f8d0a45f9533761859d79266831f58a62f0c52a 100644
--- a/remoting/host/me2me_preference_pane.mm
+++ b/remoting/host/me2me_preference_pane.mm
@@ -226,12 +226,15 @@ std::string JsonHostConfig::GetSerializedData() const {
                               inputData:""]) {
     LOG(ERROR) << "Failed to run the helper tool";
     [self showError];
+    [self notifyPlugin: kUpdateFailedNotificationName];
     return;
   }
 
   // Stop the launchd job.  This cannot easily be done by the helper tool,
   // since the launchd job runs in the current user's context.
   [self sendJobControlMessage:LAUNCH_KEY_STOPJOB];
+
+  [self notifyPlugin: kUpdateSucceededNotificationName];
 }
 
 - (void)onNewConfigFile:(NSNotification*)notification {