Worker: Remove WorkerLoaderProxy for clean-up

third_party/WebKit/Source/modules/webaudio/AudioWorkletMessagingProxy.cpp

 // Copyright 2016 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/webaudio/AudioWorkletMessagingProxy.h"
 
 #include "core/workers/ThreadedWorkletObjectProxy.h"
 #include "modules/webaudio/AudioWorkletThread.h"
 
 namespace blink {
 
 AudioWorkletMessagingProxy::AudioWorkletMessagingProxy(
     ExecutionContext* execution_context)
     : ThreadedWorkletMessagingProxy(execution_context) {}
 
 AudioWorkletMessagingProxy::~AudioWorkletMessagingProxy() {}
 
 std::unique_ptr<WorkerThread> AudioWorkletMessagingProxy::CreateWorkerThread(
     double origin_time) {
-  return AudioWorkletThread::Create(LoaderProxy(), WorkletObjectProxy());
+  return AudioWorkletThread::Create(GetThreadableLoadingContext(),
+                                    WorkletObjectProxy());
 }
 
 }  // namespace blink