ServiceWorker: Queue tasks until the registration proxy becomes ready

content/child/service_worker/web_service_worker_registration_impl.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_REGISTRATION_IMPL_H_
 #define CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_REGISTRATION_IMPL_H_
 
+#include <vector>
+
 #include "base/compiler_specific.h"
 #include "third_party/WebKit/public/platform/WebServiceWorkerRegistration.h"
 
 namespace blink {
 class WebServiceWorker;
 class WebServiceWorkerRegistrationProxy;
 }
 
 namespace content {
 
@@ skipping 13 matching lines @@
   void SetActive(blink::WebServiceWorker* service_worker);
 
   void OnUpdateFound();
 
   // blink::WebServiceWorkerRegistration overrides.
   virtual void setProxy(blink::WebServiceWorkerRegistrationProxy* proxy);
   virtual blink::WebServiceWorkerRegistrationProxy* proxy();
   virtual blink::WebURL scope() const;
 
  private:
+  enum QueuedTaskType {
+    INSTALLING,
+    WAITING,
+    ACTIVE,
+    UPDATE_FOUND,
+  };
+
+  struct QueuedTask {
+    QueuedTask(QueuedTaskType type,
+               blink::WebServiceWorker* worker);
+    QueuedTaskType type;
+    blink::WebServiceWorker* worker;
+  };
+
+  void RunQueuedTasks();
+  void ClearQueuedTasks();
+
   scoped_ptr<ServiceWorkerRegistrationHandleReference> handle_ref_;
   blink::WebServiceWorkerRegistrationProxy* proxy_;
 
+  std::vector<QueuedTask> queued_tasks_;
+
   DISALLOW_COPY_AND_ASSIGN(WebServiceWorkerRegistrationImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_SERVICE_WORKER_WEB_SERVICE_WORKER_REGISTRATION_IMPL_H_