[worklets] Make WorkerThread handle both Worker and Worklet global scopes.

third_party/WebKit/Source/core/loader/ThreadableLoaderTest.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 "core/loader/ThreadableLoader.h"
 
 #include "core/dom/CrossThreadTask.h"
 #include "core/fetch/MemoryCache.h"
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/loader/DocumentThreadableLoader.h"
@@ skipping 251 matching lines @@
         ASSERT(m_workerThread->isCurrentThread());
 
         ThreadableLoaderOptions options;
         options.crossOriginRequestPolicy = crossOriginRequestPolicy;
         ResourceLoaderOptions resourceLoaderOptions;
 
         // Ensure that WorkerThreadableLoader is created.
         // ThreadableLoader::create() determines whether it should create
         // a DocumentThreadableLoader or WorkerThreadableLoader based on
         // isWorkerGlobalScope().
-        ASSERT(m_workerThread->workerGlobalScope()->isWorkerGlobalScope());
+        DCHECK(m_workerThread->globalScope()->isWorkerGlobalScope());
 
-        m_loader = ThreadableLoader::create(*m_workerThread->workerGlobalScope(), client, options, resourceLoaderOptions);
+        m_loader = ThreadableLoader::create(*m_workerThread->globalScope(), client, options, resourceLoaderOptions);
         ASSERT(m_loader);
         event->signal();
     }
 
     void workerStartLoader(WaitableEvent* event, std::unique_ptr<CrossThreadResourceRequestData> requestData)
     {
         ASSERT(m_workerThread);
         ASSERT(m_workerThread->isCurrentThread());
 
         ResourceRequest request(requestData.get());
@@ skipping 546 matching lines @@
     EXPECT_CALL(*client(), didFailRedirectCheck()).WillOnce(InvokeWithoutArgs(this, &ThreadableLoaderTest::clearLoader));
 
     startLoader(redirectLoopURL());
     callCheckpoint(2);
     serveRequests();
 }
 
 } // namespace
 
 } // namespace blink