Worker: Add WorkerOrWorkletGlobalScope::thread() interface

third_party/WebKit/Source/core/workers/DedicatedWorkerGlobalScope.cpp

Index: third_party/WebKit/Source/core/workers/DedicatedWorkerGlobalScope.cpp
diff --git a/third_party/WebKit/Source/core/workers/DedicatedWorkerGlobalScope.cpp b/third_party/WebKit/Source/core/workers/DedicatedWorkerGlobalScope.cpp
index 3f31441b1dc7b75a8442a0e1abfaf43b5bc73638..7b2b1017d145d0d0abe7b02df07b52a8bcee1f87 100644
--- a/third_party/WebKit/Source/core/workers/DedicatedWorkerGlobalScope.cpp
+++ b/third_party/WebKit/Source/core/workers/DedicatedWorkerGlobalScope.cpp
@@ -96,12 +96,8 @@ void DedicatedWorkerGlobalScope::postMessage(
       MessagePort::disentanglePorts(context, ports, exceptionState);
   if (exceptionState.hadException())
     return;
-  thread()->workerObjectProxy().postMessageToWorkerObject(std::move(message),
-                                                          std::move(channels));
-}
-
-DedicatedWorkerThread* DedicatedWorkerGlobalScope::thread() const {
-  return static_cast<DedicatedWorkerThread*>(WorkerGlobalScope::thread());
+  workerObjectProxy().postMessageToWorkerObject(std::move(message),
+                                                std::move(channels));
 }
 
 static void countOnDocument(UseCounter::Feature feature,
@@ -118,16 +114,21 @@ static void countDeprecationOnDocument(UseCounter::Feature feature,
 
 void DedicatedWorkerGlobalScope::countFeature(
     UseCounter::Feature feature) const {
-  thread()->workerObjectProxy().postTaskToMainExecutionContext(
+  workerObjectProxy().postTaskToMainExecutionContext(
       createCrossThreadTask(&countOnDocument, feature));
 }
 
 void DedicatedWorkerGlobalScope::countDeprecation(
     UseCounter::Feature feature) const {
-  thread()->workerObjectProxy().postTaskToMainExecutionContext(
+  workerObjectProxy().postTaskToMainExecutionContext(
       createCrossThreadTask(&countDeprecationOnDocument, feature));
 }
 
+InProcessWorkerObjectProxy& DedicatedWorkerGlobalScope::workerObjectProxy()
+    const {
+  return static_cast<DedicatedWorkerThread*>(thread())->workerObjectProxy();
+}
+
 DEFINE_TRACE(DedicatedWorkerGlobalScope) {
   WorkerGlobalScope::trace(visitor);
 }