Add ref count to service workers for extension API.

extensions/renderer/dispatcher.h

Index: extensions/renderer/dispatcher.h
diff --git a/extensions/renderer/dispatcher.h b/extensions/renderer/dispatcher.h
index b592b075de6bc2605e0952f64376656c17a5e780..b960bef335a44d0aa817cb4de856cf3510e0fe5d 100644
--- a/extensions/renderer/dispatcher.h
+++ b/extensions/renderer/dispatcher.h
@@ -102,7 +102,7 @@ class Dispatcher : public content::RenderThreadObserver,
   // variables.
   void DidInitializeServiceWorkerContextOnWorkerThread(
       v8::Local<v8::Context> v8_context,
-      int embedded_worker_id,
+      int64_t service_worker_version_id,
       const GURL& url);
 
   void WillReleaseScriptContext(blink::WebLocalFrame* frame,
@@ -112,7 +112,7 @@ class Dispatcher : public content::RenderThreadObserver,
   // Runs on a different thread and should not use any member variables.
   static void WillDestroyServiceWorkerContextOnWorkerThread(
       v8::Local<v8::Context> v8_context,
-      int embedded_worker_id,
+      int64_t service_worker_version_id,
       const GURL& url);
 
   // This method is not allowed to run JavaScript code in the frame.