ServiceWorker: Queue tasks until the registration proxy becomes ready

content/child/service_worker/web_service_worker_registration_impl.h

Index: content/child/service_worker/web_service_worker_registration_impl.h
diff --git a/content/child/service_worker/web_service_worker_registration_impl.h b/content/child/service_worker/web_service_worker_registration_impl.h
index 9a72c11db485997f39b8bfd36274ee94a2dd6b88..e143a5cde948a00a722ad5b64dae9f113bb40d80 100644
--- a/content/child/service_worker/web_service_worker_registration_impl.h
+++ b/content/child/service_worker/web_service_worker_registration_impl.h
@@ -5,6 +5,8 @@
 #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"
 
@@ -38,9 +40,28 @@ class WebServiceWorkerRegistrationImpl
   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);
 };