[Sync] Rename syncable_prefs to sync_preferences.

ios/chrome/browser/browser_state/chrome_browser_state.h

 // Copyright 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 IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_H_
 #define IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_H_
 
 #include <map>
 #include <string>
 
@@ skipping 15 matching lines @@
 namespace base {
 class SequencedTaskRunner;
 class Time;
 }
 
 namespace net {
 class SSLConfigService;
 class URLRequestInterceptor;
 }
 
-namespace syncable_prefs {
+namespace sync_preferences {
 class PrefServiceSyncable;
 }
 
 namespace web {
 class WebUIIOS;
 }
 
 namespace ios {
 
 enum class ChromeBrowserStateType {
@@ skipping 42 matching lines @@
   // Retrieves a pointer to the PrefService that manages the preferences
   // for OffTheRecord browser states.
   virtual PrefService* GetOffTheRecordPrefs() = 0;
 
   // Allows access to ChromeBrowserStateIOData without going through
   // ResourceContext that is not compiled on iOS. This method must be called on
   // UI thread, but the returned object must only be accessed on the IO thread.
   virtual ChromeBrowserStateIOData* GetIOData() = 0;
 
   // Retrieves a pointer to the PrefService that manages the preferences as
-  // a syncable_prefs::PrefServiceSyncable.
-  virtual syncable_prefs::PrefServiceSyncable* GetSyncablePrefs();
+  // a sync_preferences::PrefServiceSyncable.
+  virtual sync_preferences::PrefServiceSyncable* GetSyncablePrefs();
 
   // Deletes all network related data since |time|. It deletes transport
   // security state since |time| and it also deletes HttpServerProperties data.
   // Works asynchronously, however if the |completion| callback is non-null, it
   // will be posted on the UI thread once the removal process completes.
   // Be aware that theoretically it is possible that |completion| will be
   // invoked after the Profile instance has been destroyed.
   virtual void ClearNetworkingHistorySince(base::Time time,
                                            const base::Closure& completion) = 0;
 
@@ skipping 38 matching lines @@
   friend class ::TestChromeBrowserStateManager;
 
   scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserState);
 };
 
 }  // namespace ios
 
 #endif  // IOS_CHROME_BROWSER_BROWSER_STATE_CHROME_BROWSER_STATE_H_