Implement languagechange event, fired when accept languages changes.

Source/core/page/Page.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All Rights Reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 513 matching lines @@
 
 void Page::didCommitLoad(LocalFrame* frame)
 {
     lifecycleNotifier().notifyDidCommitLoad(frame);
     if (m_mainFrame == frame) {
         useCounter().didCommitLoad();
         m_inspectorController->didCommitLoadForMainFrame();
     }
 }
 
+void Page::acceptLanguagesChanged()
+{
+    Vector< RefPtr<LocalFrame> > frames;
+
+    for (LocalFrame* frame = mainFrame(); frame; frame = frame->tree().traverseNext())
+        frames.append(frame);
+
+    for (unsigned i = 0; i < frames.size(); ++i)
+        frames[i]->domWindow()->dispatchEvent(Event::create(EventTypeNames::languagechange));
+}
+
 PageLifecycleNotifier& Page::lifecycleNotifier()
 {
     return static_cast<PageLifecycleNotifier&>(LifecycleContext<Page>::lifecycleNotifier());
 }
 
 PassOwnPtr<LifecycleNotifier<Page> > Page::createLifecycleNotifier()
 {
     return PageLifecycleNotifier::create(this);
 }
 
@@ skipping 42 matching lines @@
     , spellCheckerClient(0)
     , storageClient(0)
 {
 }
 
 Page::PageClients::~PageClients()
 {
 }
 
 } // namespace WebCore