Move display preference code from ash/display/ to ui/display/manager/.

ash/display/display_pref_util.h

-// Copyright (c) 2013 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 ASH_DISPLAY_DISPLAY_PREF_UTIL_H
-#define ASH_DISPLAY_DISPLAY_PREF_UTIL_H
-
-#include <map>
-#include <string>
-
-#include "base/strings/string_piece.h"
-
-namespace ash {
-
-// Utility templates to create enum to string map and
-// a function to find an enum value from a string.
-template <typename T>
-std::map<T, std::string>* CreateToStringMap(T k1,
-                                            const std::string& v1,
-                                            T k2,
-                                            const std::string& v2,
-                                            T k3,
-                                            const std::string& v3,
-                                            T k4,
-                                            const std::string& v4) {
-  std::map<T, std::string>* map = new std::map<T, std::string>();
-  (*map)[k1] = v1;
-  (*map)[k2] = v2;
-  (*map)[k3] = v3;
-  (*map)[k4] = v4;
-  return map;
-}
-
-template <typename T>
-std::map<T, std::string>* CreateToStringMap(T k1,
-                                            const std::string& v1,
-                                            T k2,
-                                            const std::string& v2,
-                                            T k3,
-                                            const std::string& v3) {
-  std::map<T, std::string>* map = new std::map<T, std::string>();
-  (*map)[k1] = v1;
-  (*map)[k2] = v2;
-  (*map)[k3] = v3;
-  return map;
-}
-
-template <typename T>
-bool ReverseFind(const std::map<T, std::string>* map,
-                 const base::StringPiece& value,
-                 T* key) {
-  typename std::map<T, std::string>::const_iterator iter = map->begin();
-  for (; iter != map->end(); ++iter) {
-    if (iter->second == value) {
-      *key = iter->first;
-      return true;
-    }
-  }
-  return false;
-}
-
-}  // namespace ash
-
-#endif  // ASH_DISPLAY_DISPLAY_PREF_UTIL_H