Send a message to the client if bad It2Me policies are read.

remoting/host/policy_watcher.h

 // Copyright 2015 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_POLICY_WATCHER_H_
 #define REMOTING_HOST_POLICY_WATCHER_H_
 
 #include <memory>
 
 #include "base/callback.h"
@@ skipping 41 matching lines @@
   // security risk of running with incorrectly formulated policies (by either
   // shutting down or locking down the host).
   // After calling |policy_error_callback| PolicyWatcher will continue watching
   // for policy changes and will call |policy_updated_callback| when the error
   // is recovered from and may call |policy_error_callback| when new errors are
   // found.
   virtual void StartWatching(
       const PolicyUpdatedCallback& policy_updated_callback,
       const PolicyErrorCallback& policy_error_callback);
 
-  // Return the current policies.
+  // Return the current policies. If the policies have not yet been read, or if
+  // an error occurred, the returned dictionary will be empty.
   std::unique_ptr<base::DictionaryValue> GetCurrentPolicies();
 
   // Return the default policies.
   static std::unique_ptr<base::DictionaryValue> GetDefaultPolicies();
 
   // Specify a |policy_service| to borrow (on Chrome OS, from the browser
   // process) or specify nullptr to internally construct and use a new
   // PolicyService (on other OS-es). PolicyWatcher must be used on the thread on
   // which it is created. |policy_service| is called on the same thread.
   //
@@ skipping 83 matching lines @@
   std::unique_ptr<policy::SchemaRegistry> owned_schema_registry_;
   std::unique_ptr<policy::ConfigurationPolicyProvider> owned_policy_provider_;
   std::unique_ptr<policy::PolicyService> owned_policy_service_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyWatcher);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_POLICY_WATCHER_H_