[BackgroundSync Cleanup] Remove periodic sync code

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 <stdint.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/common/background_sync_service.mojom.h"
 #include "content/public/child/worker_thread.h"
 #include "third_party/WebKit/public/platform/modules/background_sync/WebSyncProvider.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace content {
 
 // The BackgroundSyncProvider is called by the SyncManager and SyncRegistration
-// objects (and their Periodic counterparts) and communicates with the
-// BackgroundSyncManager object in the browser process. Each thread will have
-// its own instance (e.g. main thread, worker threads), instantiated as needed
-// by BlinkPlatformImpl.  Each instance of the provider creates a new mojo
-// connection to a new BackgroundSyncManagerImpl, which then talks to the
-// BackgroundSyncManager object.
+// objects and communicates with the BackgroundSyncManager object in the browser
+// process. Each thread will have its own instance (e.g. main thread, worker
+// threads), instantiated as needed by BlinkPlatformImpl.  Each instance of
+// the provider creates a new mojo connection to a new
+// BackgroundSyncManagerImpl, which then talks to the BackgroundSyncManager
+// object.
 class BackgroundSyncProvider : public blink::WebSyncProvider,
                                public WorkerThread::Observer {
  public:
   // Constructor made public to allow BlinkPlatformImpl to own a copy for the
   // main thread. Everyone else should use GetOrCreateThreadSpecificInstance().
   explicit BackgroundSyncProvider(
       const scoped_refptr<base::SingleThreadTaskRunner> main_task_runner);
 
   ~BackgroundSyncProvider() override;
 
   // Returns thread-specific instance (if exists).  Otherwise, a new instance
   // will be created for the thread, except when called for a worker thread that
   // has already been stopped.
   static BackgroundSyncProvider* GetOrCreateThreadSpecificInstance(
       base::SingleThreadTaskRunner* main_thread_task_runner);
 
   // blink::WebSyncProvider implementation
   void registerBackgroundSync(
       const blink::WebSyncRegistration* options,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       bool requested_from_service_worker,
       blink::WebSyncRegistrationCallbacks* callbacks) override;
   void unregisterBackgroundSync(
       int64_t handle_id,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncUnregistrationCallbacks* callbacks) override;
   void getRegistration(
-      blink::WebSyncRegistration::Periodicity,
       const blink::WebString& tag,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncRegistrationCallbacks* callbacks) override;
   void getRegistrations(
-      blink::WebSyncRegistration::Periodicity periodicity,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncGetRegistrationsCallbacks* callbacks) override;
   void getPermissionStatus(
-      blink::WebSyncRegistration::Periodicity periodicity,
       blink::WebServiceWorkerRegistration* service_worker_registration,
       blink::WebSyncGetPermissionStatusCallbacks* callbacks) override;
   // TODO(jkarlin): Rename to releaseRegistrationHandle.
   void releaseRegistration(int64_t handle_id) override;
   void notifyWhenFinished(
       int64_t handle_id,
       blink::WebSyncNotifyWhenFinishedCallbacks* callbacks) override;
 
   void DuplicateRegistrationHandle(
       int64_t handle_id,
@@ skipping 34 matching lines @@
 
   BackgroundSyncServicePtr background_sync_service_;
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundSyncProvider);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_BACKGROUND_SYNC_BACKGROUND_SYNC_PROVIDER_H_