Sanitize PrefStore interface.

chrome/browser/prefs/command_line_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_PREFS_COMMAND_LINE_PREF_STORE_H_
 #define CHROME_BROWSER_PREFS_COMMAND_LINE_PREF_STORE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
 #include "base/scoped_ptr.h"
-#include "chrome/common/pref_store.h"
+#include "base/values.h"
+#include "chrome/browser/prefs/value_map_pref_store.h"
 
 class DictionaryValue;
 
 // This PrefStore keeps track of preferences set by command-line switches,
 // such as proxy settings.
-class CommandLinePrefStore : public PrefStore {
+class CommandLinePrefStore : public ValueMapPrefStore {
  public:
   explicit CommandLinePrefStore(const CommandLine* command_line);
   virtual ~CommandLinePrefStore();
 
-  // PrefStore methods:
-  virtual PrefReadError ReadPrefs();
-  virtual DictionaryValue* prefs() const { return prefs_.get(); }
-
  protected:
   // Logs a message and returns false if the proxy switches are
   // self-contradictory. Protected so it can be used in unit testing.
   bool ValidateProxySwitches();
 
  private:
   struct StringSwitchToPreferenceMapEntry {
     const char* switch_name;
     const char* preference_path;
   };
 
   // |set_value| indicates what the preference should be set to if the switch
   // is present.
   struct BooleanSwitchToPreferenceMapEntry {
     const char* switch_name;
     const char* preference_path;
     bool set_value;
   };
   static const BooleanSwitchToPreferenceMapEntry boolean_switch_map_[];
 
   // Using the string and boolean maps, apply command-line switches to their
   // corresponding preferences in this pref store.
   void ApplySimpleSwitches();
 
   // Weak reference.
   const CommandLine* command_line_;
 
-  scoped_ptr<DictionaryValue> prefs_;
-
   static const StringSwitchToPreferenceMapEntry string_switch_map_[];
 
   DISALLOW_COPY_AND_ASSIGN(CommandLinePrefStore);
 };
 
 #endif  // CHROME_BROWSER_PREFS_COMMAND_LINE_PREF_STORE_H_