[ObjC ARC] Converts ios/chrome/browser/ui/ntp:ntp_internal to ARC.

ios/chrome/browser/ui/ntp/new_tab_page_controller.h

 // Copyright 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 IOS_CHROME_BROWSER_UI_NTP_NEW_TAB_PAGE_CONTROLLER_H_
 #define IOS_CHROME_BROWSER_UI_NTP_NEW_TAB_PAGE_CONTROLLER_H_
 
 #import <UIKit/UIKit.h>
 #include <string>
 
@@ skipping 56 matching lines @@
 //
 // The currently visible *PanelController is accessible through
 // |currentController_|.
 //
 @interface NewTabPageController
     : NativeContentController<LogoAnimationControllerOwnerOwner,
                               NewTabPageBarDelegate,
                               NewTabPagePanelControllerDelegate,
                               ToolbarOwner,
                               UIGestureRecognizerDelegate,
-                              UIScrollViewDelegate> {
- @private
-  base::scoped_nsobject<BookmarkHomeTabletNTPController> bookmarkController_;
-  base::scoped_nsobject<GoogleLandingViewController> googleLandingController_;
-  base::scoped_nsprotocol<id<NewTabPagePanelProtocol>> incognitoController_;
-  // The currently visible controller, one of the above.
-  id<NewTabPagePanelProtocol> currentController_;  // weak
-}
+                              UIScrollViewDelegate>
 
-@property(nonatomic, assign) id<CRWSwipeRecognizerProvider>
+@property(nonatomic, weak) id<CRWSwipeRecognizerProvider>
     swipeRecognizerProvider;
 
 // Init with the given url (presumably "chrome://newtab") and loader object.
 // |loader| may be nil, but isn't retained so it must outlive this controller.
 // Dominant color cache is passed to bookmark controller only, to optimize
 // favicon processing.
 - (id)initWithUrl:(const GURL&)url
                   loader:(id<UrlLoader>)loader
                  focuser:(id<OmniboxFocuser>)focuser
              ntpObserver:(id<NewTabPageControllerObserver>)ntpObserver
@@ skipping 11 matching lines @@
 // shield.
 - (BOOL)wantsKeyboardShield;
 
 // Returns |YES| if the current visible controller allows showing the location
 // bar hint text.
 - (BOOL)wantsLocationBarHintText;
 
 @end
 
 #endif  // IOS_CHROME_BROWSER_UI_NTP_NEW_TAB_PAGE_CONTROLLER_H_