ServiceWorker: Implement WebServiceWorkerRegistrationImpl::proxy()

content/child/service_worker/web_service_worker_registration_impl.cc

Index: content/child/service_worker/web_service_worker_registration_impl.cc
diff --git a/content/child/service_worker/web_service_worker_registration_impl.cc b/content/child/service_worker/web_service_worker_registration_impl.cc
index 312ef2b8459f9db0d60fab8b44c6ce143713beab..8bb7ed114172773b9220e962ba03e7492f591ece 100644
--- a/content/child/service_worker/web_service_worker_registration_impl.cc
+++ b/content/child/service_worker/web_service_worker_registration_impl.cc
@@ -41,6 +41,11 @@ void WebServiceWorkerRegistrationImpl::setProxy(
   proxy_ = proxy;
 }
 
+blink::WebServiceWorkerRegistrationProxy*
+WebServiceWorkerRegistrationImpl::proxy() {
+  return proxy_;
+}
+
 void WebServiceWorkerRegistrationImpl::setInstalling(
     blink::WebServiceWorker* service_worker) {
   DCHECK(proxy_);