Prerender: Confirm ServiceWorkers are invoked for NoState Prefetch

content/public/browser/service_worker_context.h

Index: content/public/browser/service_worker_context.h
diff --git a/content/public/browser/service_worker_context.h b/content/public/browser/service_worker_context.h
index c095f9d1314c7fe028441bb19479c2f73d4fc99e..a7427446f6b0f8a5f8c7c74efee2ad2280d04000 100644
--- a/content/public/browser/service_worker_context.h
+++ b/content/public/browser/service_worker_context.h
@@ -125,6 +125,13 @@ class ServiceWorkerContext {
   // This function can be called from any thread.
   virtual void StopAllServiceWorkersForOrigin(const GURL& origin) = 0;
 
+  // As above, but |callback| is executed for each running worker stopped, or if

[falken, 2017/01/06 16:17:55]

nit: This comment no longer matches the latest patchset (not "each" anymore).

[mattcary, 2017/01/09 14:45:42]

Moot

+  // there are no running workers to stop. The callback will run on the IO
+  // thread.
+  virtual void StopAllServiceWorkersForOriginWithCallback(
+      const GURL& origin,
+      const base::Closure& callback) = 0;
+
   // Stops all running service workers and unregisters all service worker
   // registrations. This method is used in LayoutTests to make sure that the
   // existing service worker will not affect the succeeding tests.