ServiceWorker: Make '.ready' return a promise to be resolved with ServiceWorkerRegistration (2/3)

content/browser/service_worker/service_worker_provider_host.h

Index: content/browser/service_worker/service_worker_provider_host.h
diff --git a/content/browser/service_worker/service_worker_provider_host.h b/content/browser/service_worker/service_worker_provider_host.h
index 6a6134a1472ba111ccd064d7da378ebe2ecdddf6..85b9e7ff7aec706bda0e46ade63fb608c89201a7 100644
--- a/content/browser/service_worker/service_worker_provider_host.h
+++ b/content/browser/service_worker/service_worker_provider_host.h
@@ -76,6 +76,10 @@ class CONTENT_EXPORT ServiceWorkerProviderHost
     return running_hosted_version_.get();
   }
 
+  ServiceWorkerRegistration* associated_registration() const {
+    return associated_registration_.get();
+  }
+
   void SetDocumentUrl(const GURL& url);
   const GURL& document_url() const { return document_url_; }