Revert of Move base/prefs to components/prefs

components/prefs/value_map_pref_store.h

Index: components/prefs/value_map_pref_store.h
diff --git a/components/prefs/value_map_pref_store.h b/components/prefs/value_map_pref_store.h
deleted file mode 100644
index eac785d4e2551d9a19b4edccaf6098c0c24c4c38..0000000000000000000000000000000000000000
--- a/components/prefs/value_map_pref_store.h
+++ /dev/null
@@ -1,57 +0,0 @@
-// 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 BASE_PREFS_VALUE_MAP_PREF_STORE_H_
-#define BASE_PREFS_VALUE_MAP_PREF_STORE_H_
-
-#include <stdint.h>
-
-#include <map>
-#include <string>
-
-#include "base/macros.h"
-#include "base/observer_list.h"
-#include "base/prefs/base_prefs_export.h"
-#include "base/prefs/pref_value_map.h"
-#include "base/prefs/writeable_pref_store.h"
-
-// A basic PrefStore implementation that uses a simple name-value map for
-// storing the preference values.
-class BASE_PREFS_EXPORT ValueMapPrefStore : public WriteablePrefStore {
- public:
-  ValueMapPrefStore();
-
-  // PrefStore overrides:
-  bool GetValue(const std::string& key,
-                const base::Value** value) const override;
-  void AddObserver(PrefStore::Observer* observer) override;
-  void RemoveObserver(PrefStore::Observer* observer) override;
-  bool HasObservers() const override;
-
-  // WriteablePrefStore overrides:
-  void SetValue(const std::string& key,
-                scoped_ptr<base::Value> value,
-                uint32_t flags) override;
-  void RemoveValue(const std::string& key, uint32_t flags) override;
-  bool GetMutableValue(const std::string& key, base::Value** value) override;
-  void ReportValueChanged(const std::string& key, uint32_t flags) override;
-  void SetValueSilently(const std::string& key,
-                        scoped_ptr<base::Value> value,
-                        uint32_t flags) override;
-
- protected:
-  ~ValueMapPrefStore() override;
-
-  // Notify observers about the initialization completed event.
-  void NotifyInitializationCompleted();
-
- private:
-  PrefValueMap prefs_;
-
-  base::ObserverList<PrefStore::Observer, true> observers_;
-
-  DISALLOW_COPY_AND_ASSIGN(ValueMapPrefStore);
-};
-
-#endif  // BASE_PREFS_VALUE_MAP_PREF_STORE_H_