[DevTools] Show stack trace for exceptions in dedicated workers

Source/core/workers/WorkerMessagingProxy.cpp

Index: Source/core/workers/WorkerMessagingProxy.cpp
diff --git a/Source/core/workers/WorkerMessagingProxy.cpp b/Source/core/workers/WorkerMessagingProxy.cpp
index 1752204326f8edd55fb9e98de4c40fbaf56f0fdc..c8b1b45aff1fc705797e95202a94fceb81abaf9e 100644
--- a/Source/core/workers/WorkerMessagingProxy.cpp
+++ b/Source/core/workers/WorkerMessagingProxy.cpp
@@ -165,7 +165,7 @@ void WorkerMessagingProxy::postTaskToLoader(PassOwnPtr<ExecutionContextTask> tas
     m_executionContext->postTask(task);
 }
 
-void WorkerMessagingProxy::reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL)
+void WorkerMessagingProxy::reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL, int exceptionId)
 {
     if (!m_workerObject)
         return;
@@ -175,8 +175,8 @@ void WorkerMessagingProxy::reportException(const String& errorMessage, int lineN
 
     RefPtrWillBeRawPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, sourceURL, lineNumber, columnNumber, nullptr);
     bool errorHandled = !m_workerObject->dispatchEvent(event);
-    if (!errorHandled)
-        m_executionContext->reportException(event, 0, nullptr, NotSharableCrossOrigin);
+
+    postTaskToWorkerGlobalScope(createCrossThreadTask(&WorkerGlobalScope::exceptionHandled, m_workerThread->workerGlobalScope(), exceptionId, errorHandled));
 }
 
 void WorkerMessagingProxy::reportConsoleMessage(MessageSource source, MessageLevel level, const String& message, int lineNumber, const String& sourceURL)