Reland of [Background Sync] Allow sync manager access from uncontrolled clients

content/browser/background_sync/background_sync_service_impl.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_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_SERVICE_IMPL_H_
 #define CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_SERVICE_IMPL_H_
 
 #include <vector>
 
 #include "base/memory/ref_counted.h"
@@ skipping 14 matching lines @@
 
   ~BackgroundSyncServiceImpl() override;
 
  private:
   friend class BackgroundSyncServiceImplTest;
 
 
   // BackgroundSyncService methods:
   void Register(content::SyncRegistrationPtr options,
                 int64_t sw_registration_id,
+                bool requested_from_service_worker,
                 const RegisterCallback& callback) override;
   void Unregister(BackgroundSyncPeriodicity periodicity,
                   int64_t id,
                   const mojo::String& tag,
                   int64_t sw_registration_id,
                   const UnregisterCallback& callback) override;
   void GetRegistration(BackgroundSyncPeriodicity periodicity,
                        const mojo::String& tag,
                        int64_t sw_registration_id,
                        const GetRegistrationCallback& callback) override;
@@ skipping 24 matching lines @@
   mojo::Binding<BackgroundSyncService> binding_;
 
   base::WeakPtrFactory<BackgroundSyncServiceImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BackgroundSyncServiceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BACKGROUND_SYNC_BACKGROUND_SYNC_SERVICE_IMPL_H_