Reinitialize LocalState's CommandLinePrefStore after about_flags updates the command line.

chrome/browser/policy/configuration_policy_pref_store.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_CONFIGURATION_POLICY_PREF_STORE_H_
 #define CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_
 #pragma once
 
+#include <string>
+
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
 #include "base/values.h"
 #include "chrome/browser/policy/configuration_policy_provider.h"
 #include "chrome/common/pref_store.h"
 
 class PrefValueMap;
 
 namespace policy {
 
 // An implementation of PrefStore that bridges policy settings as read from a
 // ConfigurationPolicyProvider to preferences.
 class ConfigurationPolicyPrefStore
     : public PrefStore,
       public ConfigurationPolicyProvider::Observer {
  public:
   // The ConfigurationPolicyPrefStore does not take ownership of the
   // passed-in |provider|.
   explicit ConfigurationPolicyPrefStore(ConfigurationPolicyProvider* provider);
   virtual ~ConfigurationPolicyPrefStore();
 
   // PrefStore methods:
   virtual void AddObserver(PrefStore::Observer* observer) OVERRIDE;
   virtual void RemoveObserver(PrefStore::Observer* observer) OVERRIDE;
+  virtual size_t NumberOfObservers() const OVERRIDE;
   virtual bool IsInitializationComplete() const OVERRIDE;
   virtual ReadResult GetValue(const std::string& key,
                               const Value** result) const OVERRIDE;
 
   // ConfigurationPolicyProvider::Observer methods:
   virtual void OnUpdatePolicy(ConfigurationPolicyProvider* provider) OVERRIDE;
   virtual void OnProviderGoingAway(
       ConfigurationPolicyProvider* provider) OVERRIDE;
 
   // Creates a ConfigurationPolicyPrefStore that reads managed platform policy.
@@ skipping 32 matching lines @@
   ObserverList<PrefStore::Observer, true> observers_;
 
   ConfigurationPolicyObserverRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ConfigurationPolicyPrefStore);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CONFIGURATION_POLICY_PREF_STORE_H_