Error pages: Break retain cycle NativeContent/StaticHTMLViewController

ios/chrome/browser/web/error_page_content.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_WEB_ERROR_PAGE_CONTENT_H_
 #define IOS_CHROME_BROWSER_WEB_ERROR_PAGE_CONTENT_H_
 
 #import <UIKit/UIKit.h>
 
-#include "base/mac/scoped_nsobject.h"
 #import "ios/chrome/browser/ui/static_content/static_html_native_content.h"
-#import "ios/chrome/browser/ui/static_content/static_html_view_controller.h"
 
 namespace web {
 class BrowserState;
 }
 
-@interface ErrorPageContent : StaticHtmlNativeContent<HtmlGenerator> {
-  // Stores the HTML generated from the NSError in the initializer.
-  base::scoped_nsobject<NSString> html_;
-}
+@interface ErrorPageContent : StaticHtmlNativeContent
 
 // Initialization. |loader| and |url| are passed up to StaticHtmlNativeContent;
 // |loader| cannot be nil.
 // |browserState| is the user browser state and must not be null.
 // |error| (in conjunction with |isPost| and |isIncognito|) is used to generate
 // an HTML page that will be stored in the HTML generator object.
 - (id)initWithLoader:(id<UrlLoader>)loader
         browserState:(web::BrowserState*)browserState
                  url:(const GURL&)url
                error:(NSError*)error
               isPost:(BOOL)isPost
          isIncognito:(BOOL)isIncognito;
 @end
 
 #endif  // IOS_CHROME_BROWSER_WEB_ERROR_PAGE_CONTENT_H_