Use mojo to connect to BackgroundSyncManager object

content/renderer/background_sync/background_sync_client_impl.cc

 // 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.
 
 #include "content/renderer/background_sync/background_sync_client_impl.h"
 
-#include "content/child/background_sync/background_sync_provider_thread_proxy.h"
+#include "content/child/background_sync/background_sync_provider.h"
 #include "content/child/background_sync/background_sync_type_converters.h"
 #include "content/renderer/service_worker/service_worker_context_client.h"
 #include "third_party/WebKit/public/platform/Platform.h"
 #include "third_party/WebKit/public/platform/WebThread.h"
 #include "third_party/WebKit/public/platform/modules/background_sync/WebSyncProvider.h"
 #include "third_party/WebKit/public/platform/modules/background_sync/WebSyncRegistration.h"
 
 namespace content {
 
 // static
@@ skipping 13 matching lines @@
       callback_seq_num_(0) {}
 
 void BackgroundSyncClientImpl::Sync(int handle_id,
                                     const SyncCallback& callback) {
   DCHECK(!blink::Platform::current()->mainThread()->isCurrentThread());
   // Get a registration for the given handle_id from the provider. This way
   // the provider knows about the handle and can delete it once Blink releases
   // it.
   // TODO(jkarlin): Change the WebSyncPlatform to support
   // DuplicateRegistrationHandle and then this cast can go.
-  BackgroundSyncProviderThreadProxy* provider =
-      static_cast<BackgroundSyncProviderThreadProxy*>(
-          blink::Platform::current()->backgroundSyncProvider());
+  BackgroundSyncProvider* provider = static_cast<BackgroundSyncProvider*>(
+      blink::Platform::current()->backgroundSyncProvider());
   DCHECK(provider);
 
   // TODO(jkarlin): Find a way to claim the handle safely without requiring a
   // round-trip IPC.
   int64_t id = ++callback_seq_num_;
   sync_callbacks_[id] = callback;
   provider->DuplicateRegistrationHandle(
       handle_id, base::Bind(&BackgroundSyncClientImpl::SyncDidGetRegistration,
                             base::Unretained(this), id));
 }
@@ skipping 20 matching lines @@
     return;
   }
 
   scoped_ptr<blink::WebSyncRegistration> web_registration =
       mojo::ConvertTo<scoped_ptr<blink::WebSyncRegistration>>(registration);
 
   client->DispatchSyncEvent(*web_registration, callback);
 }
 
 }  // namespace content