Worker: Add WorkerOrWorkletGlobalScope::thread() interface

third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.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/CompositorWorkerGlobalScope.h"
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 #include "core/workers/InProcessWorkerObjectProxy.h"
 #include "core/workers/WorkerThreadStartupData.h"
 #include "modules/EventTargetModules.h"
@@ skipping 58 matching lines @@
 void CompositorWorkerGlobalScope::postMessage(
     ExecutionContext* executionContext,
     PassRefPtr<SerializedScriptValue> message,
     const MessagePortArray& ports,
     ExceptionState& exceptionState) {
   // Disentangle the port in preparation for sending it to the remote context.
   std::unique_ptr<MessagePortChannelArray> channels =
       MessagePort::disentanglePorts(executionContext, ports, exceptionState);
   if (exceptionState.hadException())
     return;
-  thread()->workerObjectProxy().postMessageToWorkerObject(std::move(message),
-                                                          std::move(channels));
+  workerObjectProxy().postMessageToWorkerObject(std::move(message),
+                                                std::move(channels));
 }
 
 int CompositorWorkerGlobalScope::requestAnimationFrame(
     FrameRequestCallback* callback) {
   const bool shouldSignal =
       !m_executingAnimationFrameCallbacks && m_callbackCollection.isEmpty();
   if (shouldSignal)
     CompositorProxyClient::from(clients())->requestAnimationFrame();
   return m_callbackCollection.registerCallback(callback);
 }
 
 void CompositorWorkerGlobalScope::cancelAnimationFrame(int id) {
   m_callbackCollection.cancelCallback(id);
 }
 
 bool CompositorWorkerGlobalScope::executeAnimationFrameCallbacks(
     double highResTimeMs) {
   AutoReset<bool> temporaryChange(&m_executingAnimationFrameCallbacks, true);
   m_callbackCollection.executeCallbacks(highResTimeMs, highResTimeMs);
   return !m_callbackCollection.isEmpty();
 }
 
-CompositorWorkerThread* CompositorWorkerGlobalScope::thread() const {
-  return static_cast<CompositorWorkerThread*>(WorkerGlobalScope::thread());
+InProcessWorkerObjectProxy& CompositorWorkerGlobalScope::workerObjectProxy()
+    const {
+  return static_cast<CompositorWorkerThread*>(thread())->workerObjectProxy();
 }
 
 }  // namespace blink