ios/chrome/browser/prefs/ios_chrome_pref_model_associator_client.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef IOS_CHROME_BROWSER_PREFS_IOS_CHROME_PREF_MODEL_ASSOCIATOR_CLIENT_H_
   6 #define IOS_CHROME_BROWSER_PREFS_IOS_CHROME_PREF_MODEL_ASSOCIATOR_CLIENT_H_
   7
   8 #include <string>
   9
  10 #include "base/macros.h"
  11 #include "components/syncable_prefs/pref_model_associator_client.h"
  12
  13 namespace base {
  14 template <typename T>
  15 struct DefaultSingletonTraits;
  16 }
  17
  18 class IOSChromePrefModelAssociatorClient
  19     : public syncable_prefs::PrefModelAssociatorClient {
  20  public:
  21   // Returns the global instance.
  22   static IOSChromePrefModelAssociatorClient* GetInstance();
  23
  24  private:
  25   friend struct base::DefaultSingletonTraits<
  26       IOSChromePrefModelAssociatorClient>;
  27
  28   IOSChromePrefModelAssociatorClient();
  29   ~IOSChromePrefModelAssociatorClient() override;
  30
  31   // syncable_prefs::PrefModelAssociatorClient implementation.
  32   bool IsMergeableListPreference(const std::string& pref_name) const override;
  33   bool IsMergeableDictionaryPreference(
  34       const std::string& pref_name) const override;
  35   bool IsMigratedPreference(const std::string& new_pref_name,
  36                             std::string* old_pref_name) const override;
  37   bool IsOldMigratedPreference(const std::string& old_pref_name,
  38                                std::string* new_pref_name) const override;
  39
  40   DISALLOW_COPY_AND_ASSIGN(IOSChromePrefModelAssociatorClient);
  41 };
  42
  43 #endif  // IOS_CHROME_BROWSER_PREFS_IOS_CHROME_PREF_MODEL_ASSOCIATOR_CLIENT_H_