Reviewed by John Sullivan.

    Reviewed by John Sullivan.

        <rdar://problem/4717841> Setting AXFocused to true does not activate the insertion point in text field

        * bridge/mac/WebCoreAXObject.mm:
        (-[WebCoreAXObject accessibilitySetValue:forAttribute:]):
        For AXFocus, use focus() if the node is an element, so that selection is set.
        Matches tabbing behavior in text fields and text areas.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@16328 268f45cc-cd09-0410-ab3c-d52691b4dbfc