Don't attempt to print an error message if there is no console.

Source/core/frame/LocalDOMWindow.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 677 matching lines @@
 
 Console& LocalDOMWindow::console() const
 {
     if (!m_console)
         m_console = Console::create(m_frame);
     return *m_console;
 }
 
 FrameConsole* LocalDOMWindow::frameConsole() const
 {
-    if (!isCurrentlyDisplayedInFrame())
-        return 0;
     return &m_frame->console();
 }
 
 ApplicationCache* LocalDOMWindow::applicationCache() const
 {
     if (!isCurrentlyDisplayedInFrame())
         return 0;
     if (!m_applicationCache)
         m_applicationCache = ApplicationCache::create(m_frame);
     return m_applicationCache.get();
@@ skipping 1216 matching lines @@
     visitor->trace(m_localStorage);
     visitor->trace(m_applicationCache);
     visitor->trace(m_performance);
     visitor->trace(m_css);
     visitor->trace(m_eventQueue);
     WillBeHeapSupplementable<LocalDOMWindow>::trace(visitor);
     EventTargetWithInlineData::trace(visitor);
 }
 
 } // namespace WebCore