Extension settings API: force through changes that come from sync (ignoring

chrome/browser/extensions/settings/settings_leveldb_storage.h

 // Copyright (c) 2011 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_EXTENSIONS_SETTINGS_SETTINGS_LEVELDB_STORAGE_H_
 #define CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_LEVELDB_STORAGE_H_
 #pragma once
 
 #include <string>
 
@@ skipping 29 matching lines @@
     DISALLOW_COPY_AND_ASSIGN(Factory);
   };
 
   // Must be deleted on the FILE thread.
   virtual ~SettingsLeveldbStorage();
 
   // SettingsStorage implementation.
   virtual ReadResult Get(const std::string& key) OVERRIDE;
   virtual ReadResult Get(const std::vector<std::string>& keys) OVERRIDE;
   virtual ReadResult Get() OVERRIDE;
-  virtual WriteResult Set(const std::string& key, const Value& value) OVERRIDE;
-  virtual WriteResult Set(const DictionaryValue& settings) OVERRIDE;
-  virtual WriteResult Remove(const std::string& key) OVERRIDE;
-  virtual WriteResult Remove(const std::vector<std::string>& keys) OVERRIDE;
-  virtual WriteResult Clear() OVERRIDE;
+  virtual WriteResult Set(
+      WriteOptions options,
+      const std::string& key,
+      const Value& value) OVERRIDE;
+  virtual WriteResult Set(
+      WriteOptions options, const DictionaryValue& values) OVERRIDE;
+  virtual WriteResult Remove(
+      WriteOptions options, const std::string& key) OVERRIDE;
+  virtual WriteResult Remove(
+      WriteOptions options, const std::vector<std::string>& keys) OVERRIDE;
+  virtual WriteResult Clear(WriteOptions options) OVERRIDE;
 
  private:
   // Ownership of db is taken.
   explicit SettingsLeveldbStorage(
       const FilePath& db_path, leveldb::DB* db);
 
   // Reads a setting from the database.  Returns whether the read was
   // successful, in which case |setting| will be reset to the Value read
   // from the database.  This value may be NULL.
   bool ReadFromDb(
@@ skipping 10 matching lines @@
 
   // leveldb backend.
   scoped_ptr<leveldb::DB> db_;
 
   DISALLOW_COPY_AND_ASSIGN(SettingsLeveldbStorage);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SETTINGS_SETTINGS_LEVELDB_STORAGE_H_