Remove virtual keyboard support.

chrome/browser/chromeos/preferences.h

Index: chrome/browser/chromeos/preferences.h
diff --git a/chrome/browser/chromeos/preferences.h b/chrome/browser/chromeos/preferences.h
index e26938c7ba5c927cc9c582a85888b1bc84a92dfb..bc161fa45acfb1c2e5a5890f6a32ba3e192ec0ec 100644
--- a/chrome/browser/chromeos/preferences.h
+++ b/chrome/browser/chromeos/preferences.h
@@ -35,10 +35,6 @@ class Preferences : public content::NotificationObserver {
   // This method will register the prefs associated with Chrome OS settings.
   static void RegisterUserPrefs(PrefService* prefs);
 
-  // This method is called when kLanguagePreferredVirtualKeyboard is updated to
-  // change the virtual keyboard settings to reflect the new value.
-  static void UpdateVirturalKeyboardPreference(PrefService* prefs);
-
   // This method will initialize Chrome OS settings to values in user prefs.
   void Init(PrefService* prefs);