Update Error Event inside a worker to provide the exact exception value

third_party/WebKit/Source/core/events/ErrorEvent.cpp

Index: third_party/WebKit/Source/core/events/ErrorEvent.cpp
diff --git a/third_party/WebKit/Source/core/events/ErrorEvent.cpp b/third_party/WebKit/Source/core/events/ErrorEvent.cpp
index 1844ee3eca936dedfd398145cc6a2b36efd0e1e8..0e854cc517e38eb4801c571fa05228a19c446903 100644
--- a/third_party/WebKit/Source/core/events/ErrorEvent.cpp
+++ b/third_party/WebKit/Source/core/events/ErrorEvent.cpp
@@ -59,10 +59,12 @@ ErrorEvent::ErrorEvent(const AtomicString& type,
 
 ErrorEvent::ErrorEvent(const String& message,
                        std::unique_ptr<SourceLocation> location,
+                       ScriptValue error,
                        DOMWrapperWorld* world)
     : Event(EventTypeNames::error, false, true),
       m_sanitizedMessage(message),
       m_location(std::move(location)),
+      m_error(error),
       m_world(world) {}
 
 void ErrorEvent::setUnsanitizedMessage(const String& message) {