Fix NTP parentViewController.

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

Index: ios/chrome/browser/ui/ntp/new_tab_page_controller.h
diff --git a/ios/chrome/browser/ui/ntp/new_tab_page_controller.h b/ios/chrome/browser/ui/ntp/new_tab_page_controller.h
index dcbe42e1667aa86c3816e7385dc73b73d031a787..3aaa25e96369e9c04e0ec8a615b83e7cd8ad0502 100644
--- a/ios/chrome/browser/ui/ntp/new_tab_page_controller.h
+++ b/ios/chrome/browser/ui/ntp/new_tab_page_controller.h
@@ -85,27 +85,19 @@ std::string FragmentFromIdentifier(PanelIdentifier panel);
 @property(nonatomic, assign) id<CRWSwipeRecognizerProvider>
     swipeRecognizerProvider;
 
-// To ease modernizing the NTP only the internal panels are being converted
-// to UIViewControllers.  This means all the plumbing between the
-// BrowserViewController and the internal NTP panels (WebController, NTP)
-// hierarchy is skipped.  While normally the logic to push and pop a view
-// controller would be owned by a coordinator, in this case the old NTP
-// controller adds and removes child view controllers itself when a load
-// is initiated, and when WebController calls -willBeDismissed.
-@property(nonatomic, assign) UIViewController* parentViewController;
-
 // 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
-          browserState:(ios::ChromeBrowserState*)browserState
-            colorCache:(NSMutableDictionary*)colorCache
-    webToolbarDelegate:(id<WebToolbarDelegate>)webToolbarDelegate
-              tabModel:(TabModel*)tabModel;
+                  loader:(id<UrlLoader>)loader
+                 focuser:(id<OmniboxFocuser>)focuser
+             ntpObserver:(id<NewTabPageControllerObserver>)ntpObserver
+            browserState:(ios::ChromeBrowserState*)browserState
+              colorCache:(NSMutableDictionary*)colorCache
+      webToolbarDelegate:(id<WebToolbarDelegate>)webToolbarDelegate
+                tabModel:(TabModel*)tabModel
+    parentViewController:(UIViewController*)parentViewController;
 
 // Select a panel based on the given |panelType|.
 - (void)selectPanel:(NewTabPage::PanelIdentifier)panelType;