Implement languagechange event, fired when accept languages changes.

Source/core/page/Page.cpp

Index: Source/core/page/Page.cpp
diff --git a/Source/core/page/Page.cpp b/Source/core/page/Page.cpp
index b78f1aae7dfec54d670b5896ec9c246a6f062e8c..5c86307f9fc03c82d9bb341f9333bba484219893 100644
--- a/Source/core/page/Page.cpp
+++ b/Source/core/page/Page.cpp
@@ -97,6 +97,13 @@ void Page::networkStateChanged(bool online)
         frames[i]->domWindow()->dispatchEvent(Event::create(eventName));
 }
 
+void Page::acceptLanguagesChanged()
+{
+    for (LocalFrame* frame = mainFrame(); frame; frame = frame->tree().traverseNext()) {

[jochen (gone - plz use gerrit), 2014/05/21 09:20:11]

no need for { }

[mlamouri (slow - plz ping), 2014/05/21 16:27:55]

Done.

+        frame->domWindow()->dispatchEvent(Event::create(EventTypeNames::languagechange));

[jochen (gone - plz use gerrit), 2014/05/21 09:20:11]

js execution could change the frames, so you should first copy all frames to a
Vector<RefPtr<LocalFrame> > and then iterate over that vector

[mlamouri (slow - plz ping), 2014/05/21 16:27:55]

Done.

+    }
+}
+
 float deviceScaleFactor(LocalFrame* frame)
 {
     if (!frame)