Record send_start timing info after starting ServiceWorker

content/browser/service_worker/service_worker_url_request_job.cc

Index: content/browser/service_worker/service_worker_url_request_job.cc
diff --git a/content/browser/service_worker/service_worker_url_request_job.cc b/content/browser/service_worker/service_worker_url_request_job.cc
index 7106aa8ea9891693057be16b428db94679cb2e06..c96d47d31a0d18511de2e514c54654c3e4ade42c 100644
--- a/content/browser/service_worker/service_worker_url_request_job.cc
+++ b/content/browser/service_worker/service_worker_url_request_job.cc
@@ -357,7 +357,6 @@ void ServiceWorkerURLRequestJob::StartRequest() {
           base::Bind(&ServiceWorkerURLRequestJob::DidDispatchFetchEvent,
                      weak_factory_.GetWeakPtr())));
       fetch_start_time_ = base::TimeTicks::Now();
-      load_timing_info_.send_start = fetch_start_time_;
       fetch_dispatcher_->Run();
       return;
   }
@@ -474,6 +473,7 @@ bool ServiceWorkerURLRequestJob::CreateRequestBodyBlob(std::string* blob_uuid,
 
 void ServiceWorkerURLRequestJob::DidPrepareFetchEvent() {
   fetch_ready_time_ = base::TimeTicks::Now();
+  load_timing_info_.send_start = fetch_ready_time_;
 }
 
 void ServiceWorkerURLRequestJob::DidDispatchFetchEvent(