Fix toV8 and ExceptionState with empty context.

Source/bindings/v8/custom/V8WindowCustom.cpp

 /*
  * Copyright (C) 2009, 2011 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 169 matching lines @@
     DOMWindow* impl = V8Window::toNative(info.Holder());
     ExceptionState exceptionState(ExceptionState::GetterContext, "frame", "Window", info.Holder(), info.GetIsolate());
     if (!BindingSecurity::shouldAllowAccessToNode(info.GetIsolate(), impl->frameElement(), exceptionState)) {
         v8SetReturnValueNull(info);
         exceptionState.throwIfNeeded();
         return;
     }
 
     // The wrapper for an <iframe> should get its prototype from the context of the frame it's in, rather than its own frame.
     // So, use its containing document as the creation context when wrapping.
-    v8::Handle<v8::Value> creationContext = toV8(&impl->frameElement()->document(), v8::Handle<v8::Object>(), info.GetIsolate());
+    v8::Handle<v8::Value> creationContext = toV8(&impl->frameElement()->document(), info.Holder(), info.GetIsolate());
     RELEASE_ASSERT(!creationContext.IsEmpty());
     v8::Handle<v8::Value> wrapper = toV8(impl->frameElement(), v8::Handle<v8::Object>::Cast(creationContext), info.GetIsolate());
     v8SetReturnValue(info, wrapper);
 }
 
 void V8Window::openerAttributeSetterCustom(v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
 {
     DOMWindow* impl = V8Window::toNative(info.Holder());
     ExceptionState exceptionState(ExceptionState::SetterContext, "opener", "Window", info.Holder(), info.GetIsolate());
     if (!BindingSecurity::shouldAllowAccessToFrame(info.GetIsolate(), impl->frame(), exceptionState)) {
@@ skipping 332 matching lines @@
     v8::Handle<v8::Context> context = toV8Context(isolate, frame, DOMWrapperWorld::current(isolate));
     if (context.IsEmpty())
         return v8Undefined();
 
     v8::Handle<v8::Object> global = context->Global();
     ASSERT(!global.IsEmpty());
     return global;
 }
 
 } // namespace WebCore