[Sync] Rename syncable_prefs to sync_preferences.

chrome/browser/extensions/test_extension_prefs.h

 // 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 CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_
 #define CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_
 
 #include <memory>
 #include <string>
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/test/base/testing_profile.h"
 #include "extensions/common/manifest.h"
 
 class ExtensionPrefValueMap;
 class PrefService;
 
 namespace base {
 class DictionaryValue;
 class SequencedTaskRunner;
 }
 
-namespace syncable_prefs {
+namespace sync_preferences {
 class PrefServiceSyncable;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace extensions {
 class ChromeAppSorting;
 class Extension;
@@ skipping 55 matching lines @@
   // active after calling RecreateExtensionPrefs(). Defaults to false.
   void set_extensions_disabled(bool extensions_disabled);
 
   ChromeAppSorting* app_sorting();
 
  protected:
   base::ScopedTempDir temp_dir_;
   base::FilePath preferences_file_;
   base::FilePath extensions_dir_;
   scoped_refptr<user_prefs::PrefRegistrySyncable> pref_registry_;
-  std::unique_ptr<syncable_prefs::PrefServiceSyncable> pref_service_;
+  std::unique_ptr<sync_preferences::PrefServiceSyncable> pref_service_;
   std::unique_ptr<ExtensionPrefValueMap> extension_pref_value_map_;
   const scoped_refptr<base::SequencedTaskRunner> task_runner_;
 
  private:
   TestingProfile profile_;
   bool extensions_disabled_;
   DISALLOW_COPY_AND_ASSIGN(TestExtensionPrefs);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_