components: Move PrefRegistrySyncable into user_prefs namespace.

chrome/browser/ui/cocoa/extensions/browser_actions_controller.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_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_
 
 #import <Cocoa/Cocoa.h>
 
 #import "base/memory/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
 
 class Browser;
 @class BrowserActionButton;
 @class BrowserActionsContainerView;
 @class ExtensionPopupController;
 class ExtensionToolbarModel;
 class ExtensionServiceObserverBridge;
 @class MenuButton;
-class PrefRegistrySyncable;
 class Profile;
 
 namespace extensions {
 class Extension;
 }
 
+namespace user_prefs {
+class PrefRegistrySyncable;
+}
+
 // Sent when the visibility of the Browser Actions changes.
 extern NSString* const kBrowserActionVisibilityChangedNotification;
 
 // Handles state and provides an interface for controlling the Browser Actions
 // container within the Toolbar.
 @interface BrowserActionsController : NSObject<NSMenuDelegate> {
  @private
   // Reference to the current browser. Weak.
   Browser* browser_;
 
@@ skipping 62 matching lines @@
 // it is passed an extension that is not a Browser Action, then it will return
 // NSZeroPoint.
 - (NSPoint)popupPointForBrowserAction:(const extensions::Extension*)extension;
 
 // Returns whether the chevron button is currently hidden or in the process of
 // being hidden (fading out). Will return NO if it is not hidden or is in the
 // process of fading in.
 - (BOOL)chevronIsHidden;
 
 // Registers the user preferences used by this class.
-+ (void)registerUserPrefs:(PrefRegistrySyncable*)prefs;
++ (void)registerUserPrefs:(user_prefs::PrefRegistrySyncable*)prefs;
 
 @end  // @interface BrowserActionsController
 
 @interface BrowserActionsController(TestingAPI)
 - (NSButton*)buttonWithIndex:(NSUInteger)index;
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_EXTENSIONS_BROWSER_ACTIONS_CONTROLLER_H_