Copy the original request header for navigation preload requests

content/browser/service_worker/service_worker_fetch_dispatcher.cc

 // Copyright 2014 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_fetch_dispatcher.h"
 
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 448 matching lines @@
   request.do_not_prompt_for_login = true;
   request.render_frame_id = original_info->GetRenderFrameID();
   request.is_main_frame = original_info->IsMainFrame();
   request.parent_is_main_frame = original_info->ParentIsMainFrame();
 
   DCHECK(net::HttpUtil::IsValidHeaderValue(
       version_->navigation_preload_state().header));
   ServiceWorkerMetrics::RecordNavigationPreloadRequestHeaderSize(
       version_->navigation_preload_state().header.length());
   request.headers = "Service-Worker-Navigation-Preload: " +
-                    version_->navigation_preload_state().header;
+                    version_->navigation_preload_state().header + "\r\n" +
+                    original_request->extra_request_headers().ToString();
 
   const int request_id = ResourceDispatcherHostImpl::Get()->MakeRequestID();
   DCHECK_LT(request_id, -1);
 
   preload_handle_ = mojom::FetchEventPreloadHandle::New();
   mojom::URLLoaderClientPtr url_loader_client_ptr;
   preload_handle_->url_loader_client_request =
       mojo::MakeRequest(&url_loader_client_ptr);
   auto url_loader_client = base::MakeUnique<DelegatingURLLoaderClient>(
       std::move(url_loader_client_ptr));
@@ skipping 30 matching lines @@
     ServiceWorkerVersion* version,
     int event_finish_id,
     scoped_refptr<URLLoaderAssets> url_loader_assets,
     ServiceWorkerStatusCode status,
     base::Time dispatch_event_time) {
   version->FinishRequest(event_finish_id, status != SERVICE_WORKER_ERROR_ABORT,
                          dispatch_event_time);
 }
 
 }  // namespace content