Implement ServiceWorkerFetchDispatcher::MaybeStartNavigationPreload().

content/browser/service_worker/service_worker_dispatcher_host_unittest.cc

 // 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.
 
 #include "content/browser/service_worker/service_worker_dispatcher_host.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 42 matching lines @@
 
 static const int kRenderFrameId = 1;
 
 class TestingServiceWorkerDispatcherHost : public ServiceWorkerDispatcherHost {
  public:
   TestingServiceWorkerDispatcherHost(
       int process_id,
       ServiceWorkerContextWrapper* context_wrapper,
       ResourceContext* resource_context,
       EmbeddedWorkerTestHelper* helper)
-      : ServiceWorkerDispatcherHost(process_id, NULL, resource_context),
+      : ServiceWorkerDispatcherHost(
+            process_id,
+            nullptr,
+            resource_context,
+            ServiceWorkerDispatcherHost::URLLoaderFactoryCallback()),
         bad_messages_received_count_(0),
         helper_(helper) {
     Init(context_wrapper);
   }
 
   bool Send(IPC::Message* message) override { return helper_->Send(message); }
 
   IPC::TestSink* ipc_sink() { return helper_->ipc_sink(); }
 
   void ShutdownForBadMessage() override { ++bad_messages_received_count_; }
@@ skipping 753 matching lines @@
   dispatcher_host_->OnMessageReceived(ServiceWorkerHostMsg_FetchEventResponse(
       version_->embedded_worker()->embedded_worker_id(), kFetchEventId,
       SERVICE_WORKER_FETCH_EVENT_RESULT_FALLBACK, ServiceWorkerResponse(),
       base::Time::Now()));
 
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(0, dispatcher_host_->bad_messages_received_count_);
 }
 
 }  // namespace content