Delete WorldContextHandle in favor of DOMWrapperWorld

Source/bindings/v8/V8WorkerContextErrorHandler.cpp

Index: Source/bindings/v8/V8WorkerContextErrorHandler.cpp
diff --git a/Source/bindings/v8/V8WorkerContextErrorHandler.cpp b/Source/bindings/v8/V8WorkerContextErrorHandler.cpp
index d69b74094ad1b20720bd6ba27e8fb9f4d8b7b1e4..87a3b20740bfb549329cbfbcb3566c1dbbd429e5 100644
--- a/Source/bindings/v8/V8WorkerContextErrorHandler.cpp
+++ b/Source/bindings/v8/V8WorkerContextErrorHandler.cpp
@@ -48,7 +48,7 @@ v8::Local<v8::Value> V8WorkerContextErrorHandler::callListenerFunction(ScriptExe
 {
     ASSERT(event->hasInterface(eventNames().interfaceForErrorEvent));
     v8::Local<v8::Object> listener = getListenerObject(context);
-    v8::Isolate* isolate = toV8Context(context, worldContext())->GetIsolate();
+    v8::Isolate* isolate = toV8Context(context, world())->GetIsolate();
     v8::Local<v8::Value> returnValue;
     if (!listener.IsEmpty() && listener->IsFunction()) {
         ErrorEvent* errorEvent = static_cast<ErrorEvent*>(event);