ServiceWorker: Add support for .skipWaiting and controllerchange event(2/3)

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 013830648e8ee56c5f83b9187a2a5a4ea4a498ec..6680d0197b56df37d738c83f80e6ede0db970505 100644
--- a/content/browser/service_worker/service_worker_version.h
+++ b/content/browser/service_worker/service_worker_version.h
@@ -240,6 +240,8 @@ class CONTENT_EXPORT ServiceWorkerVersion
   void Doom();
   bool is_doomed() const { return is_doomed_; }
 
+  bool skip_waiting() const { return skip_waiting_; }
+
  private:
   friend class base::RefCounted<ServiceWorkerVersion>;
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerControlleeRequestHandlerTest,
@@ -293,7 +295,9 @@ class CONTENT_EXPORT ServiceWorkerVersion
   void OnPostMessageToDocument(int client_id,
                                const base::string16& message,
                                const std::vector<int>& sent_message_port_ids);
+  void OnSkipWaiting(int request_id);
 
+  void DidSkipWaiting(int request_id);
   void ScheduleStopWorker();
   void DoomInternal();
 
@@ -324,6 +328,8 @@ class CONTENT_EXPORT ServiceWorkerVersion
   base::OneShotTimer<ServiceWorkerVersion> stop_worker_timer_;
   base::OneShotTimer<ServiceWorkerVersion> update_timer_;
   bool is_doomed_;
+  std::vector<int> pending_skip_waiting_requests_;
+  bool skip_waiting_;
 
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;