Added RefreshPolicies to PolicyService.

chrome/browser/policy/policy_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_POLICY_POLICY_SERVICE_H_
 #define CHROME_BROWSER_POLICY_POLICY_SERVICE_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 58 matching lines @@
   // asynchronous loads. IsInitializationComplete() returns true once all
   // sources have loaded their policies. It is safe to read policy from the
   // PolicyService even if IsInitializationComplete() is false; there will be an
   // OnPolicyUpdated() notification once new policies become available.
   //
   // OnPolicyServiceInitialized() is called when IsInitializationComplete()
   // becomes true, which happens at most once. If IsInitializationComplete() is
   // already true when an Observer is registered, then that Observer will not
   // have a OnPolicyServiceInitialized() notification.
   virtual bool IsInitializationComplete() const = 0;
+
+  // Asks the PolicyService to reload policy from all available policy sources.
+  // |callback| is invoked once every source has reloaded its policies, and
+  // GetPolicies() is guaranteed to return the updated values at that point.
+  virtual void RefreshPolicies(const base::Closure& callback) = 0;
 };
 
 // A registrar that only observes changes to particular policies within the
 // PolicyMap for the given policy namespace.
 class PolicyChangeRegistrar : public PolicyService::Observer {
  public:
   typedef base::Callback<void(const Value*, const Value*)> UpdateCallback;
 
   // Observes updates to the given (domain, component_id) namespace in the given
   // |policy_service|, and notifies |observer| whenever any of the registered
@@ skipping 24 matching lines @@
   PolicyDomain domain_;
   std::string component_id_;
   CallbackMap callback_map_;
 
   DISALLOW_COPY_AND_ASSIGN(PolicyChangeRegistrar);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_POLICY_SERVICE_H_