Sanitize PrefStore interface.

chrome/browser/policy/configuration_policy_pref_store.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_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_
 #define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_
 #pragma once
 
 #include <set>
 #include <string>
@@ skipping 16 matching lines @@
                                      public ConfigurationPolicyStoreInterface {
  public:
   typedef std::set<const char*> ProxyPreferenceSet;
 
   // The ConfigurationPolicyPrefStore does not take ownership of the
   // passed-in |provider|.
   explicit ConfigurationPolicyPrefStore(ConfigurationPolicyProvider* provider);
   virtual ~ConfigurationPolicyPrefStore();
 
   // PrefStore methods:
-  virtual PrefReadError ReadPrefs();
+  virtual ReadResult GetValue(const std::string& key, Value** result) const;
+
   virtual DictionaryValue* prefs() const { return prefs_.get(); }
 
   // ConfigurationPolicyStore methods:
   virtual void Apply(ConfigurationPolicyType setting, Value* value);
 
   // Creates a ConfigurationPolicyPrefStore that reads managed platform policy.
   static ConfigurationPolicyPrefStore* CreateManagedPlatformPolicyPrefStore();
 
   // Creates a ConfigurationPolicyPrefStore that supplies policy from
   // the device management server.
@@ skipping 86 matching lines @@
   // unspecified map entries.  Otherwise wipes all default search related
   // map entries from |prefs_|.
   void FinalizeDefaultSearchPolicySettings();
 
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyPrefStore);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_