Always run PolicyWatcher on UI thread in It2Me host.

remoting/host/it2me/it2me_host.h

 // Copyright 2013 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.
 
 #ifndef REMOTING_HOST_IT2ME_IT2ME_HOST_H_
 #define REMOTING_HOST_IT2ME_IT2ME_HOST_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 117 matching lines @@
                            const base::TimeDelta& lifetime);
 
   // Shuts down |host_| on the network thread and posts ShutdownOnUiThread()
   // to shut down UI thread resources.
   void ShutdownOnNetworkThread();
 
   // Shuts down |desktop_environment_factory_| and |policy_watcher_| on
   // the UI thread.
   void ShutdownOnUiThread();
 
-  // Called when |policy_watcher_| has stopped listening for changes and it is
-  // safe to delete it.
-  void OnPolicyWatcherShutdown();
-
   // Called when initial policies are read, and when they change.
   void OnPolicyUpdate(scoped_ptr<base::DictionaryValue> policies);
 
   // Called when malformed policies are detected.
   void OnPolicyError();
 
   // Handlers for NAT traversal and host domain policies.
   void UpdateNatPolicy(bool nat_traversal_enabled);
   void UpdateHostDomainPolicy(const std::string& host_domain);
 
@@ skipping 61 matching lines @@
       const std::string& directory_bot_jid);
 
  private:
   policy::PolicyService* policy_service_;
   DISALLOW_COPY_AND_ASSIGN(It2MeHostFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_IT2ME_IT2ME_HOST_H_