Pass the correct webState to the nativeContent.

ios/chrome/browser/ui/preload_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 <UIKit/UIKit.h>
 
 #include "ios/chrome/browser/ui/preload_controller.h"
 
 #include "base/ios/device_util.h"
 #include "base/logging.h"
@@ skipping 259 matching lines @@
 #pragma mark -
 #pragma mark CRWNativeContentProvider implementation
 
 // Delegate the call to the original native provider.
 - (BOOL)hasControllerForURL:(const GURL&)url {
   return [[tab_ webController].nativeProvider hasControllerForURL:url];
 }
 
 // Override the CRWNativeContentProvider methods to cancel any prerenders that
 // require native content.
-- (id<CRWNativeContent>)controllerForURL:(const GURL&)url {
+- (id<CRWNativeContent>)controllerForURL:(const GURL&)url
+                                webState:(web::WebState*)webState {
   [self schedulePrerenderCancel];
   return nil;
 }
 
 // Override the CRWNativeContentProvider methods to cancel any prerenders that
 // require native content.
 - (id<CRWNativeContent>)controllerForURL:(const GURL&)url
                                withError:(NSError*)error
                                   isPost:(BOOL)isPost {
   [self schedulePrerenderCancel];
@@ skipping 112 matching lines @@
   scheduledURL_ = GURL();
 }
 
 #pragma mark - TabDelegate
 
 - (void)discardPrerender {
   [self schedulePrerenderCancel];
 }
 
 @end