Propagate nested importScripts() error events outwards.

Source/core/workers/WorkerGlobalScope.cpp

Index: Source/core/workers/WorkerGlobalScope.cpp
diff --git a/Source/core/workers/WorkerGlobalScope.cpp b/Source/core/workers/WorkerGlobalScope.cpp
index 53ba4a2321fd73da421a55dd1475c4ef6f2ef884..aa29b5808553b46bfd2e8e4dc14c489b621030ea 100644
--- a/Source/core/workers/WorkerGlobalScope.cpp
+++ b/Source/core/workers/WorkerGlobalScope.cpp
@@ -264,7 +264,7 @@ void WorkerGlobalScope::importScripts(const Vector<String>& urls, ExceptionState
         RefPtrWillBeRawPtr<ErrorEvent> errorEvent = nullptr;
         m_script->evaluate(ScriptSourceCode(scriptLoader->script(), scriptLoader->responseURL()), &errorEvent);
         if (errorEvent) {
-            m_script->rethrowExceptionFromImportedScript(errorEvent.release());
+            m_script->rethrowExceptionFromImportedScript(errorEvent.release(), exceptionState);
             return;
         }
     }