Get rid of capsLockStateMayHaveChanged on RenderObject.  It is only implemented by one class (text fields),
        so devirtualize and just query at the single call site.

        Reviewed by Eric Seidel

        * page/EventHandler.cpp:
        (WebCore::EventHandler::capsLockStateMayHaveChanged):
        * rendering/RenderObject.h:
        * rendering/RenderTextControlSingleLine.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@40836 268f45cc-cd09-0410-ab3c-d52691b4dbfc