Create DOM exceptions in the correct context.

Source/bindings/v8/ExceptionStatePlaceholder.h

 /*
  * Copyright (C) 2013 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 25 matching lines @@
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class ExceptionState;
 
 typedef int ExceptionCode;
 
 class IgnorableExceptionState : public ExceptionState {
 public:
-    IgnorableExceptionState(): ExceptionState(0) { }
+    IgnorableExceptionState(): ExceptionState(v8::Handle<v8::Object>(), 0) { }
     ExceptionState& returnThis() { return *this; }
     virtual void throwDOMException(const ExceptionCode&, const String& message = String()) OVERRIDE FINAL { };
     virtual void throwTypeError(const String& message = String()) OVERRIDE FINAL { }
     virtual void throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage = String()) OVERRIDE FINAL { }
 };
 
 #define IGNORE_EXCEPTION (::WebCore::IgnorableExceptionState().returnThis())
 
 #if ASSERT_DISABLED
 
@@ skipping 14 matching lines @@
     int m_line;
 };
 
 #define ASSERT_NO_EXCEPTION (::WebCore::NoExceptionStateAssertionChecker(__FILE__, __LINE__).returnThis())
 
 #endif
 
 } // namespace WebCore
 
 #endif // ExceptionStatePlaceholder_h