Pass the correct webState to the nativeContent.

ios/chrome/browser/ui/browser_view_controller.mm

 // 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.
 
 #import "ios/chrome/browser/ui/browser_view_controller.h"
 
 #import <AssetsLibrary/AssetsLibrary.h>
 #import <MobileCoreServices/MobileCoreServices.h>
 #import <PassKit/PassKit.h>
 #import <Photos/Photos.h>
@@ skipping 2897 matching lines @@
   return errorPageContent;
 }
 
 - (BOOL)hasControllerForURL:(const GURL&)url {
   std::string host(url.host());
 
   return host == kChromeUINewTabHost || host == kChromeUIBookmarksHost ||
          host == kChromeUITermsHost || host == kChromeUIOfflineHost;
 }
 
-- (id<CRWNativeContent>)controllerForURL:(const GURL&)url {
+- (id<CRWNativeContent>)controllerForURL:(const GURL&)url
+                                webState:(web::WebState*)webState {
   DCHECK(url.SchemeIs(kChromeUIScheme));
 
   id<CRWNativeContent> nativeController = nil;
   std::string url_host = url.host();
   if (url_host == kChromeUINewTabHost || url_host == kChromeUIBookmarksHost) {
     NewTabPageController* pageController =
         [[[NewTabPageController alloc] initWithUrl:url
                                             loader:self
                                            focuser:_toolbarController
                                        ntpObserver:self
@@ skipping 32 matching lines @@
                                   loader:self
                             browserState:_browserState
                                      url:GURL(kChromeUITermsURL)] autorelease];
     [self setOverScrollActionControllerToStaticNativeContent:
               staticNativeController];
     nativeController = staticNativeController;
   } else if (url_host == kChromeUIOfflineHost) {
     StaticHtmlNativeContent* staticNativeController =
         [[[OfflinePageNativeContent alloc] initWithLoader:self
                                              browserState:_browserState
-                                                 webState:[self currentWebState]
+                                                 webState:webState
                                                       URL:url] autorelease];
     [self setOverScrollActionControllerToStaticNativeContent:
               staticNativeController];
     nativeController = staticNativeController;
   } else if (url_host == kChromeUIExternalFileHost) {
     // Return an instance of the |ExternalFileController| only if the file is
     // still in the sandbox.
     NSString* filePath = [ExternalFileController pathForExternalFileURL:url];
     if ([[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
       nativeController = [[[ExternalFileController alloc]
@@ skipping 2186 matching lines @@
 
 - (UIView*)voiceSearchButton {
   return _voiceSearchButton;
 }
 
 - (id<LogoAnimationControllerOwner>)logoAnimationControllerOwner {
   return [self currentLogoAnimationControllerOwner];
 }
 
 @end