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

ios/chrome/browser/ui/ntp/new_tab_page_controller_unittest.mm

Index: ios/chrome/browser/ui/ntp/new_tab_page_controller_unittest.mm
diff --git a/ios/chrome/browser/ui/ntp/new_tab_page_controller_unittest.mm b/ios/chrome/browser/ui/ntp/new_tab_page_controller_unittest.mm
index 2314916466bf0a6f944a1ac9db346b815501ddf0..717ab6b577f4ad446ade6ffd8c95a9e1f46fe51d 100644
--- a/ios/chrome/browser/ui/ntp/new_tab_page_controller_unittest.mm
+++ b/ios/chrome/browser/ui/ntp/new_tab_page_controller_unittest.mm
@@ -34,31 +34,6 @@
 #error "This file requires ARC support."
 #endif
 
-@interface NewTabPageController (TestSupport)
-- (id<NewTabPagePanelProtocol>)currentController;
-- (BookmarkHomeTabletNTPController*)bookmarkController;
-- (id<NewTabPagePanelProtocol>)incognitoController;
-@end
-
-@interface NewTabPageController (PrivateMethods)
-@property(nonatomic, retain) NewTabPageView* ntpView;
-@end
-
-@implementation NewTabPageController (TestSupport)
-
-- (id<NewTabPagePanelProtocol>)currentController {
-  return currentController_;
-}
-
-- (BookmarkHomeTabletNTPController*)bookmarkController {
-  return bookmarkController_.get();
-}
-
-- (id<NewTabPagePanelProtocol>)incognitoController {
-  return incognitoController_;
-}
-
-@end
 
 namespace {