Trigger `window.onerror` only for exceptions thrown in the same world.

Source/bindings/v8/V8Initializer.cpp

 /*
  * Copyright (C) 2009 Google 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 84 matching lines @@
     RefPtr<ScriptCallStack> callStack;
     // Currently stack trace is only collected when inspector is open.
     if (!stackTrace.IsEmpty() && stackTrace->GetFrameCount() > 0)
         callStack = createScriptCallStack(stackTrace, ScriptCallStack::maxCallStackSizeToCapture, v8::Isolate::GetCurrent());
 
     v8::Handle<v8::Value> resourceName = message->GetScriptResourceName();
     bool shouldUseDocumentURL = resourceName.IsEmpty() || !resourceName->IsString();
     String resource = shouldUseDocumentURL ? firstWindow->document()->url() : toWebCoreString(resourceName);
     AccessControlStatus corsStatus = message->IsSharedCrossOrigin() ? SharableCrossOrigin : NotSharableCrossOrigin;
 
-    RefPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, resource, message->GetLineNumber(), message->GetStartColumn());
+    RefPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, resource, message->GetLineNumber(), message->GetStartColumn(), DOMWrapperWorld::current());
     if (V8DOMWrapper::isDOMWrapper(data)) {
         v8::Handle<v8::Object> obj = v8::Handle<v8::Object>::Cast(data);
         WrapperTypeInfo* type = toWrapperTypeInfo(obj);
         if (V8DOMException::info.isSubclass(type)) {
             DOMException* exception = V8DOMException::toNative(obj);
             if (exception && !exception->messageForConsole().isEmpty())
                 event->setUnsanitizedMessage("Uncaught " + exception->toStringForConsole());
         }
     }
 
@@ skipping 67 matching lines @@
     // Exceptions that occur in error handler should be ignored since in that case
     // WorkerGlobalScope::reportException will send the exception to the worker object.
     if (isReportingException)
         return;
     isReportingException = true;
 
     // During the frame teardown, there may not be a valid context.
     if (ScriptExecutionContext* context = getScriptExecutionContext()) {
         String errorMessage = toWebCoreString(message->Get());
         String sourceURL = toWebCoreString(message->GetScriptResourceName());
-        RefPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, sourceURL, message->GetLineNumber(), message->GetStartColumn());
+        RefPtr<ErrorEvent> event = ErrorEvent::create(errorMessage, sourceURL, message->GetLineNumber(), message->GetStartColumn(), DOMWrapperWorld::current());
         AccessControlStatus corsStatus = message->IsSharedCrossOrigin() ? SharableCrossOrigin : NotSharableCrossOrigin;
 
         V8ErrorHandler::storeExceptionOnErrorEventWrapper(event.get(), data, v8::Isolate::GetCurrent());
         context->reportException(event.release(), 0, corsStatus);
     }
 
     isReportingException = false;
 }
 
 static const int kWorkerMaxStackSize = 500 * 1024;
 
 void V8Initializer::initializeWorker(v8::Isolate* isolate)
 {
     initializeV8Common();
 
     v8::V8::AddMessageListener(messageHandlerInWorker);
     v8::V8::SetFatalErrorHandler(reportFatalErrorInWorker);
 
     v8::ResourceConstraints resourceConstraints;
     uint32_t here;
     resourceConstraints.set_stack_limit(&here - kWorkerMaxStackSize / sizeof(uint32_t*));
     v8::SetResourceConstraints(&resourceConstraints);
 
     V8PerIsolateData::ensureInitialized(isolate);
 }
 
 } // namespace WebCore