Create new pending item if UserAgentOverrideOption is not INHERIT.

ios/web/navigation/navigation_manager_impl.mm

 // Copyright 2013 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/web/navigation/navigation_manager_impl.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 174 matching lines @@
 
 void NavigationManagerImpl::AddPendingItem(
     const GURL& url,
     const web::Referrer& referrer,
     ui::PageTransition navigation_type,
     NavigationInitiationType initiation_type,
     UserAgentOverrideOption user_agent_override_option) {
   [session_controller_ addPendingItem:url
                              referrer:referrer
                            transition:navigation_type
-                       initiationType:initiation_type];
+                       initiationType:initiation_type
+              userAgentOverrideOption:user_agent_override_option];
 
   // Set the user agent type for web URLs.
   NavigationItem* pending_item = GetPendingItem();
   if (!pending_item)
     return;
 
   // |user_agent_override_option| must be INHERIT if |pending_item|'s
   // UserAgentType is NONE, as requesting a desktop or mobile user agent should
   // be disabled for app-specific URLs.
   DCHECK(pending_item->GetUserAgentType() != UserAgentType::NONE ||
@@ skipping 257 matching lines @@
   const ScopedNavigationItemImplList& items = [session_controller_ items];
   while (index >= 0) {
     NavigationItem* item = items[index--].get();
     if (!client->IsAppSpecificURL(item->GetVirtualURL()))
       return item;
   }
   return nullptr;
 }
 
 }  // namespace web