Worker: Remove WorkerLoaderProxy for clean-up

third_party/WebKit/Source/modules/compositorworker/CompositorWorkerMessagingProxy.cpp

 // 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 "modules/compositorworker/CompositorWorkerMessagingProxy.h"
 
 #include "core/workers/WorkerThreadStartupData.h"
 #include "modules/compositorworker/CompositorWorkerThread.h"
 #include <memory>
 
 namespace blink {
 
 CompositorWorkerMessagingProxy::CompositorWorkerMessagingProxy(
     InProcessWorkerBase* worker,
     WorkerClients* worker_clients)
     : InProcessWorkerMessagingProxy(worker, worker_clients) {
   DCHECK(IsMainThread());
 }
 
 CompositorWorkerMessagingProxy::~CompositorWorkerMessagingProxy() {}
 
 std::unique_ptr<WorkerThread>
 CompositorWorkerMessagingProxy::CreateWorkerThread(double origin_time) {
-  return CompositorWorkerThread::Create(LoaderProxy(), WorkerObjectProxy(),
-                                        origin_time);
+  return CompositorWorkerThread::Create(GetThreadableLoadingContext(),
+                                        WorkerObjectProxy(), origin_time);
 }
 
 }  // namespace blink