Update installed ServiceWorkers.

content/browser/service_worker/service_worker_version.h

Index: content/browser/service_worker/service_worker_version.h
diff --git a/content/browser/service_worker/service_worker_version.h b/content/browser/service_worker/service_worker_version.h
index 5c24b2af1db97bf899cde8e20a95a66f340ab168..20ea2a1a3c58cc33f5b7f28147ee1a8313ed10c6 100644
--- a/content/browser/service_worker/service_worker_version.h
+++ b/content/browser/service_worker/service_worker_version.h
@@ -70,20 +70,24 @@ class CONTENT_EXPORT ServiceWorkerVersion
 
   class Listener {
    public:
-    virtual void OnWorkerStarted(ServiceWorkerVersion* version) {};
-    virtual void OnWorkerStopped(ServiceWorkerVersion* version) {};
-    virtual void OnVersionStateChanged(ServiceWorkerVersion* version) {};
+    virtual void OnWorkerStarted(ServiceWorkerVersion* version) {}
+    virtual void OnWorkerStopped(ServiceWorkerVersion* version) {}
+    virtual void OnVersionStateChanged(ServiceWorkerVersion* version) {}
     virtual void OnErrorReported(ServiceWorkerVersion* version,
                                  const base::string16& error_message,
                                  int line_number,
                                  int column_number,
-                                 const GURL& source_url) {};
+                                 const GURL& source_url) {}
     virtual void OnReportConsoleMessage(ServiceWorkerVersion* version,
                                         int source_identifier,
                                         int message_level,
                                         const base::string16& message,
                                         int line_number,
-                                        const GURL& source_url) {};
+                                        const GURL& source_url) {}
+    virtual void OnNoControllees(ServiceWorkerVersion* version) {}

[falken, 2014/07/17 06:33:43]

Can we add a comment "Called when a version that controlled a page no longer
controls any pages"? I remember jsbell had a question about this.

+
+   protected:
+    virtual ~Listener() {}
   };
 
   ServiceWorkerVersion(