Reviewed by Gustavo Noronha Silva.

        [GTK] Right click does not activate text entry
        https://bugs.webkit.org/show_bug.cgi?id=29177

        Stop skipping some tests which where failing because of right click
        not being correct handled.

        * platform/gtk/Skipped:
2010-03-01  José Millán Soto  <jmillan@igalia.com>

        Reviewed by Gustavo Noronha Silva.

        [GTK] Right click does not activate text entry
        https://bugs.webkit.org/show_bug.cgi?id=29177

        Makes the frame handle the mouse click event before sending the
        context menu event.

        * webkit/webkitwebview.cpp:
        (PopupMenuPositionFunc):
        Function created to make the popup menu appear in the correct position, especially
        when invoked from the keyboard.
        (webkit_web_view_forward_context_menu_event):
        Mouse click event is sent to frame before creating context menu,
        PopupMenuPositionFunc used to determine the position where the menu should appear.
        (webkit_web_view_popup_menu_handler):
        Improved focused node position detection. Event button set to right button.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@55389 268f45cc-cd09-0410-ab3c-d52691b4dbfc