Browser side of ServiceWorker requestSyncEvents() function

content/browser/service_worker/service_worker_version.h

 // Copyright 2013 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_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 145 matching lines @@
   //
   // This must be called when the status() is ACTIVE.
   void DispatchSyncEvent(const StatusCallback& callback);
 
   // These are expected to be called when a renderer process host for the
   // same-origin as for this ServiceWorkerVersion is created.  The added
   // processes are used to run an in-renderer embedded worker.
   void AddProcessToWorker(int process_id);
   void RemoveProcessToWorker(int process_id);
 
+  // Allows registering for sync events.
+  void RequestSyncEvents(bool requested);

[michaeln, 2014/04/03 22:52:22]

naming nit: Can we rename this to use the term Enable sync events instead of
request in both blink and chrome? I think thats a more clear verb for this
function. wdyt?

[jkarlin, 2014/04/04 00:32:20]

I like request because there is no guarantee as to when (or even if) the sync
event will occur and there will soon be parameters hinting when it should be
called.

+
   EmbeddedWorkerInstance* embedded_worker() { return embedded_worker_.get(); }
 
   // EmbeddedWorkerInstance::Observer overrides:
   virtual void OnStarted() OVERRIDE;
   virtual void OnStopped() OVERRIDE;
   virtual void OnMessageReceived(int request_id,
                                  const IPC::Message& message) OVERRIDE;
 
  private:
   typedef ServiceWorkerVersion self;
   friend class base::RefCounted<ServiceWorkerVersion>;
 
   virtual ~ServiceWorkerVersion();
 
   const int64 version_id_;
 
   Status status_;
 
   bool is_shutdown_;
+  // TODO(jkarlin): requested_sync_events_ needs to persist across Chrome
+  // restarts once SWs start to have such persistence.
+  bool requested_sync_events_;
   scoped_refptr<ServiceWorkerRegistration> registration_;
   scoped_ptr<EmbeddedWorkerInstance> embedded_worker_;
 
   // Pending callbacks.
   std::vector<StatusCallback> start_callbacks_;
   std::vector<StatusCallback> stop_callbacks_;
 
   std::vector<base::Closure> status_change_callbacks_;
 
   IDMap<MessageCallback, IDMapOwnPointer> message_callbacks_;
 
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_