Show service worker navigation preload requests in DevTools Network tab.

content/browser/loader/resource_dispatcher_host_impl.cc

Index: content/browser/loader/resource_dispatcher_host_impl.cc
diff --git a/content/browser/loader/resource_dispatcher_host_impl.cc b/content/browser/loader/resource_dispatcher_host_impl.cc
index 3b634786db3c869600cc10841358612c331612f6..5669449ed703cfe52feab5132a6010e7da6c29b1 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.cc
+++ b/content/browser/loader/resource_dispatcher_host_impl.cc
@@ -1456,7 +1456,12 @@ void ResourceDispatcherHostImpl::ContinuePendingBeginRequest(
   ChildProcessSecurityPolicyImpl* policy =
       ChildProcessSecurityPolicyImpl::GetInstance();
   bool report_raw_headers = request_data.report_raw_headers;
-  if (report_raw_headers && !policy->CanReadRawCookies(child_id)) {
+  if (report_raw_headers && !policy->CanReadRawCookies(child_id) &&
+      !requester_info->IsNavigationPreload()) {
+    // For navigation preload, the child_id is -1 so CanReadRawCookies would
+    // return false. But |report_raw_headers| of the navigation preload request
+    // was copied from the original request, so this check has already been
+    // carried out.
     // TODO: crbug.com/523063 can we call bad_message::ReceivedBadMessage here?
     VLOG(1) << "Denied unauthorized request for raw headers";
     report_raw_headers = false;