Add ref count to service workers for extension API.

content/renderer/service_worker/service_worker_context_client.cc

Index: content/renderer/service_worker/service_worker_context_client.cc
diff --git a/content/renderer/service_worker/service_worker_context_client.cc b/content/renderer/service_worker/service_worker_context_client.cc
index 50b7c5d201f73aa78f435bdbe134683b20d0ca71..a1deda7c63e649ad363cc8ca65c0fbd9d17cf08f 100644
--- a/content/renderer/service_worker/service_worker_context_client.cc
+++ b/content/renderer/service_worker/service_worker_context_client.cc
@@ -455,7 +455,7 @@ void ServiceWorkerContextClient::didInitializeWorkerContext(
   GetContentClient()
       ->renderer()
       ->DidInitializeServiceWorkerContextOnWorkerThread(
-          context, embedded_worker_id_, script_url_);
+          context, service_worker_version_id_, script_url_);
 }
 
 void ServiceWorkerContextClient::willDestroyWorkerContext(
@@ -474,7 +474,7 @@ void ServiceWorkerContextClient::willDestroyWorkerContext(
   g_worker_client_tls.Pointer()->Set(NULL);
 
   GetContentClient()->renderer()->WillDestroyServiceWorkerContextOnWorkerThread(
-      context, embedded_worker_id_, script_url_);
+      context, service_worker_version_id_, script_url_);
 }
 
 void ServiceWorkerContextClient::workerContextDestroyed() {