Verified that these strings are not used, so removing the FIXME.

webkit/api/src/LocalizedStrings.cpp

 /*
  * Copyright (C) 2009 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 223 matching lines @@
 String contextMenuItemTagItalic() { return String(); }
 String contextMenuItemTagUnderline() { return String(); }
 String contextMenuItemTagOutline() { return String(); }
 String contextMenuItemTagWritingDirectionMenu() { return String(); }
 String contextMenuItemTagTextDirectionMenu() { return String(); }
 String contextMenuItemTagDefaultDirection() { return String(); }
 String contextMenuItemTagLeftToRight() { return String(); }
 String contextMenuItemTagRightToLeft() { return String(); }
 String contextMenuItemTagInspectElement() { return String(); }
 String contextMenuItemTagShowSpellingPanel(bool show) { return String(); }
-
-// FIXME: These should return something.
 String mediaElementLiveBroadcastStateText() { return String(); }
 String mediaElementLoadingStateText() { return String(); }
 
 } // namespace WebCore