Support decoding GenericNamedValue based policy.

chrome/browser/policy/configuration_policy_provider.h

 // Copyright (c) 2011 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_CONFIGURATION_POLICY_PROVIDER_H_
 #define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 60 matching lines @@
   void ApplyPolicyMap(const PolicyMap* policies,
                       ConfigurationPolicyStoreInterface* store);
 
   const PolicyDefinitionList* policy_definition_list() const {
     return policy_definition_list_;
   }
 
  private:
   friend class ConfigurationPolicyObserverRegistrar;
 
+  // Temporarily needed for access to ApplyPolicyValueTree as long as we need
+  // to support old-style policy.
+  friend class UserPolicyCache;
+
   virtual void AddObserver(ConfigurationPolicyProvider::Observer* observer) = 0;
   virtual void RemoveObserver(
       ConfigurationPolicyProvider::Observer* observer) = 0;
 
   // Contains the default mapping from policy values to the actual names.
   const ConfigurationPolicyProvider::PolicyDefinitionList*
       policy_definition_list_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyProvider);
@@ skipping 19 matching lines @@
  private:
   ConfigurationPolicyProvider* provider_;
   ConfigurationPolicyProvider::Observer* observer_;
 
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyObserverRegistrar);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PROVIDER_H_