Correctly keep track of isolates for microtask execution

Source/core/workers/WorkerThread.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 58 matching lines @@
 
     virtual void willProcessTask() override
     {
         // No tasks should get executed after we have closed.
         WorkerGlobalScope* globalScope = m_workerThread->workerGlobalScope();
         ASSERT_UNUSED(globalScope, !globalScope || !globalScope->isClosing());
     }
 
     virtual void didProcessTask() override
     {
-        Microtask::performCheckpoint();
+        Microtask::performCheckpoint(m_workerThread->isolate());
         if (WorkerGlobalScope* globalScope = m_workerThread->workerGlobalScope()) {
             if (WorkerScriptController* scriptController = globalScope->script())
                 scriptController->rejectedPromises()->processQueue();
             if (globalScope->isClosing()) {
                 m_workerThread->workerReportingProxy().workerGlobalScopeClosed();
                 m_workerThread->shutdown();
             }
         }
     }
 
@@ skipping 490 matching lines @@
     InspectorInstrumentation::didLeaveNestedRunLoop(m_workerGlobalScope.get());
 }
 
 void WorkerThread::setWorkerInspectorController(WorkerInspectorController* workerInspectorController)
 {
     MutexLocker locker(m_workerInspectorControllerMutex);
     m_workerInspectorController = workerInspectorController;
 }
 
 } // namespace blink