[Not for review] record detailed time breakdown of SW related requests.

content/browser/service_worker/service_worker_url_request_job.h

Index: content/browser/service_worker/service_worker_url_request_job.h
diff --git a/content/browser/service_worker/service_worker_url_request_job.h b/content/browser/service_worker/service_worker_url_request_job.h
index 4953e5c72270ac45cb7975296dfaae19292d73af..12d8892e0b7b0a5ed1d0f0d8d3af5a2bc17c3f92 100644
--- a/content/browser/service_worker/service_worker_url_request_job.h
+++ b/content/browser/service_worker/service_worker_url_request_job.h
@@ -144,6 +144,13 @@ class CONTENT_EXPORT ServiceWorkerURLRequestJob : public net::URLRequestJob {
   void RecordResult(ServiceWorkerMetrics::URLRequestJobResult result);
   //----------------------------------------------------------------------------
 
+  void set_renderer_request_time(base::TimeTicks t) {
+    renderer_request_time_ = t;
+  }
+  void set_handler_creation_time(base::TimeTicks t) {
+    handler_creation_time_ = t;
+  }
+
   base::WeakPtr<ServiceWorkerURLRequestJob> GetWeakPtr();
 
  private:
@@ -329,6 +336,10 @@ class CONTENT_EXPORT ServiceWorkerURLRequestJob : public net::URLRequestJob {
 
   std::unique_ptr<FileSizeResolver> file_size_resolver_;
 
+  base::TimeTicks renderer_request_time_;
+  base::TimeTicks handler_creation_time_;
+  base::TimeTicks job_creation_time_;
+
   base::WeakPtrFactory<ServiceWorkerURLRequestJob> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerURLRequestJob);