Add 'error' parameter to 'window.onerror' handlers.

Source/core/dom/ErrorEvent.h

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ErrorEvent_h
 #define ErrorEvent_h
 
+#include "bindings/v8/ScriptValue.h"
+#include "bindings/v8/SerializedScriptValue.h"
 #include "core/dom/Event.h"
 #include "wtf/text/WTFString.h"
+#include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 struct ErrorEventInit : public EventInit {
     ErrorEventInit();
 
     String message;
     String filename;
     unsigned lineno;
     unsigned column;
+    ScriptValue error;
 };
 
 class ErrorEvent : public Event {
 public:
     static PassRefPtr<ErrorEvent> create()
     {
         return adoptRef(new ErrorEvent);
     }
-    static PassRefPtr<ErrorEvent> create(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber)
+    static PassRefPtr<ErrorEvent> create(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber, const ScriptValue& error)
     {
-        return adoptRef(new ErrorEvent(message, fileName, lineNumber, columnNumber));
+        return adoptRef(new ErrorEvent(message, fileName, lineNumber, columnNumber, error));
     }
     static PassRefPtr<ErrorEvent> create(const AtomicString& type, const ErrorEventInit& initializer)
     {
         return adoptRef(new ErrorEvent(type, initializer));
     }
     virtual ~ErrorEvent();
 
     const String& message() const { return m_message; }
     const String& filename() const { return m_fileName; }
     unsigned lineno() const { return m_lineNumber; }
     unsigned column() const { return m_columnNumber; }
+    const ScriptValue& error() const { return m_error; }

[abarth-chromium, 2013/07/25 18:24:08]

Doesn't this create a leak between isolated worlds?  We need to do something
like what we've done with CustomEvent here.

+    void setSerializedError(PassRefPtr<SerializedScriptValue> error) { m_serializedError = error; }
 
     virtual const AtomicString& interfaceName() const;
 
 private:
     ErrorEvent();
-    ErrorEvent(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber);
+    ErrorEvent(const String& message, const String& fileName, unsigned lineNumber, unsigned columnNumber, const ScriptValue& error);
     ErrorEvent(const AtomicString&, const ErrorEventInit&);
 
     String m_message;
     String m_fileName;
     unsigned m_lineNumber;
     unsigned m_columnNumber;
+    ScriptValue m_error;
+
+    RefPtr<SerializedScriptValue> m_serializedError;
 };
 
 } // namespace WebCore
 
 #endif // ErrorEvent_h