Introduce a new ResourceRequesterInfo type for NavigationPreload.

content/browser/loader/url_loader_factory_impl.cc

 // Copyright 2016 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.
 
 #include "content/browser/loader/url_loader_factory_impl.h"
 
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader/resource_requester_info.h"
 #include "content/common/resource_request.h"
 #include "content/common/url_loader.mojom.h"
@@ skipping 18 matching lines @@
   }
 
   callback.Run(*result);
 }
 
 } // namespace
 
 URLLoaderFactoryImpl::URLLoaderFactoryImpl(
     scoped_refptr<ResourceRequesterInfo> requester_info)
     : requester_info_(std::move(requester_info)) {
-  DCHECK(requester_info_->IsRenderer());
-  DCHECK(requester_info_->filter());
+  DCHECK((requester_info_->IsRenderer() && requester_info_->filter()) ||
+         requester_info_->IsNavigationPreload());
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 }
 
 URLLoaderFactoryImpl::~URLLoaderFactoryImpl() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 }
 
 void URLLoaderFactoryImpl::CreateLoaderAndStart(
     mojom::URLLoaderAssociatedRequest request,
     int32_t routing_id,
@@ skipping 46 matching lines @@
 
 void URLLoaderFactoryImpl::Create(
     scoped_refptr<ResourceRequesterInfo> requester_info,
     mojo::InterfaceRequest<mojom::URLLoaderFactory> request) {
   mojo::MakeStrongBinding(
       base::WrapUnique(new URLLoaderFactoryImpl(std::move(requester_info))),
       std::move(request));
 }
 
 }  // namespace content