[Background Sync] Add renderer code to interface between JS API and back-end service

content/child/background_sync/background_sync_provider.h

+// Copyright 2015 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_BACKGROUND_SYNC_BACKGROUND_SYNC_PROVIDER_H_
+#define CONTENT_CHILD_BACKGROUND_SYNC_BACKGROUND_SYNC_PROVIDER_H_
+
+#include <string>
+
+#include "base/memory/scoped_ptr.h"
+#include "content/child/worker_task_runner.h"
+#include "content/common/background_sync_service.mojom.h"
+#include "third_party/WebKit/public/platform/modules/background_sync/WebSyncProvider.h"
+
+namespace content {
+
+class ServiceRegistry;
+

[jkarlin, 2015/05/01 16:13:51]

Add a class comment here.

[iclelland, 2015/05/05 14:52:02]

Done.

+class BackgroundSyncProvider : public blink::WebSyncProvider,
+                     public WorkerTaskRunner::Observer {

[jkarlin, 2015/05/01 16:13:51]

Why is this a WorkerTaskRunner observer? I don't see any calls to
AddStopObserver or RemoveStopObserver.

[iclelland, 2015/05/05 14:52:02]

This was a holdover from the template I used; Should be deletable.

+ public:
+  explicit BackgroundSyncProvider(ServiceRegistry* service_registry);
+
+  ~BackgroundSyncProvider() override;
+
+  // blink::WebSyncProvider implementation
+  void registerBackgroundSync(
+      const blink::WebSyncRegistration* options,
+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncRegistrationCallbacks* callbacks);
+  void unregisterBackgroundSync(
+      blink::WebSyncRegistration::Periodicity periodicity,
+      int64_t id, const blink::WebString& tag,
+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncUnregistrationCallbacks* callbacks);
+  void getRegistration(
+      blink::WebSyncRegistration::Periodicity,
+      const blink::WebString& tag,
+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncRegistrationCallbacks* callbacks);
+  void getRegistrations(
+      blink::WebSyncRegistration::Periodicity periodicity,
+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncGetRegistrationsCallbacks* callbacks);
+
+  // WorkerTaskRunner::Observer implementation.
+  void OnWorkerRunLoopStopped() override;
+
+  // Entry points for Background Sync API calls from worker threads
+  void RegisterBackgroundSyncForWorker(
+      const blink::WebSyncRegistration* options,

[jkarlin, 2015/05/01 16:13:51]

This should be a scoped_ptr.

[iclelland, 2015/05/07 06:03:50]

Done.

+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncRegistrationCallbacks* callbacks, int worker_thread_id);
+  void UnregisterBackgroundSyncForWorker(
+      blink::WebSyncRegistration::Periodicity periodicity, int64_t id,
+      const blink::WebString& tag,
+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncUnregistrationCallbacks* callbacks, int worker_thread_id);
+  void GetRegistrationForWorker(
+      blink::WebSyncRegistration::Periodicity periodicity,
+      const blink::WebString& tag,
+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncRegistrationCallbacks* callbacks, int worker_thread_id);
+  void GetRegistrationsForWorker(
+      blink::WebSyncRegistration::Periodicity periodicity,
+      blink::WebServiceWorkerRegistration* service_worker_registration,
+      blink::WebSyncGetRegistrationsCallbacks* callbacks, int worker_thread_id);
+
+ private:
+  // Callback handlers
+  void registerCallback(blink::WebSyncRegistrationCallbacks* callbacks,

[jkarlin, 2015/05/01 16:13:51]

Caps: RegisterCallback

[iclelland, 2015/05/05 14:52:02]

Done.

+                        int worker_thread_id,
+                        const SyncRegistrationPtr &options);
+  void unregisterCallback(blink::WebSyncUnregistrationCallbacks* callbacks,

[jkarlin, 2015/05/01 16:13:51]

ditto

[iclelland, 2015/05/05 14:52:02]

Done.

+                          int worker_thread_id, bool success);
+  void getRegistrationsCallback(

[jkarlin, 2015/05/01 16:13:51]

ditto

[iclelland, 2015/05/05 14:52:02]

Done.

+      blink::WebSyncGetRegistrationsCallbacks* callbacks, int worker_thread_id,
+      const mojo::Array<SyncRegistrationPtr> &registrations);
+
+  // Helper method that returns an initialized BackgroundSyncServicePtr.
+  BackgroundSyncServicePtr& GetBackgroundSyncServicePtr();
+
+  ServiceRegistry* service_registry_;
+  BackgroundSyncServicePtr background_sync_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(BackgroundSyncProvider);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_CHILD_BACKGROUND_SYNC_BACKGROUND_SYNC_PROVIDER_H_