Changing policy while Chrome is running should refresh preferences without relaunching

chrome/browser/configuration_policy_provider.h

 // Copyright (c) 2010 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_CONFIGURATION_POLICY_PROVIDER_H_
 #define CHROME_BROWSER_CONFIGURATION_POLICY_PROVIDER_H_
 #pragma once
 
 #include <vector>
 
@@ skipping 12 matching lines @@
 
   // Must be implemented by provider subclasses to specify the
   // provider-specific policy decisions. The preference service
   // invokes this |Provide| method when it needs a policy
   // provider to specify its policy choices. In |Provide|,
   // the |ConfigurationPolicyProvider| must make calls to the
   // |Apply| method of |store| to apply specific policies.
   // Returns true if the policy could be provided, otherwise false.
   virtual bool Provide(ConfigurationPolicyStore* store) = 0;
 
+  // Called by the subclass provider at any time to indicate that the currently
+  // applied policy is not longer current. A policy refresh will be initiated as
+  // soon as possible.
+  virtual void NotifyStoreOfPolicyChange();
+
  protected:
   // A structure mapping policies to their implementations by providers.
   struct PolicyValueMapEntry {
     ConfigurationPolicyStore::PolicyType policy_type;
     Value::ValueType value_type;
     std::string name;
   };
   typedef std::vector<PolicyValueMapEntry> PolicyValueMap;
 
   // Returns the mapping from policy values to the actual names used by
   // implementations.
   static const PolicyValueMap* PolicyValueMapping();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyProvider);
 };
 
 #endif  // CHROME_BROWSER_CONFIGURATION_POLICY_PROVIDER_H_