Reviewed by Kent Tamura.

        Make editing/deleting/5390681.html and
        editing/deleting/delete-mixed-editable-content-001.html use Markup
        instead of render tree.
        https://bugs.webkit.org/show_bug.cgi?id=48112

        * editing/deleting/5390681-expected.txt: Added.
        * editing/deleting/5390681.html: Updated to use Markup instead of
        render tree.
        * editing/deleting/delete-mixed-editable-content-001-expected.txt: Added.
        * editing/deleting/delete-mixed-editable-content-001.html: Updated to
        use Markup instead of render tree.
        * platform/chromium-linux/editing/deleting/5390681-expected.checksum: Removed.
        * platform/chromium-linux/editing/deleting/5390681-expected.png: Removed.
        * platform/chromium-linux/editing/deleting/delete-mixed-editable-content-001-expected.checksum: Removed.
        * platform/chromium-linux/editing/deleting/delete-mixed-editable-content-001-expected.png: Removed.
        * platform/chromium-win/editing/deleting/5390681-expected.checksum: Removed.
        * platform/chromium-win/editing/deleting/5390681-expected.png: Removed.
        * platform/chromium-win/editing/deleting/5390681-expected.txt: Removed.
        * platform/chromium-win/editing/deleting/delete-mixed-editable-content-001-expected.checksum: Removed.
        * platform/chromium-win/editing/deleting/delete-mixed-editable-content-001-expected.png: Removed.
        * platform/chromium-win/editing/deleting/delete-mixed-editable-content-001-expected.txt: Removed.
        * platform/gtk/editing/deleting/5390681-expected.txt: Removed.
        * platform/mac-leopard/editing/deleting/5390681-expected.checksum: Removed.
        * platform/mac-leopard/editing/deleting/5390681-expected.png: Removed.
        * platform/mac/editing/deleting/5390681-expected.checksum: Removed.
        * platform/mac/editing/deleting/5390681-expected.png: Removed.
        * platform/mac/editing/deleting/5390681-expected.txt: Removed.
        * platform/mac/editing/deleting/delete-mixed-editable-content-001-expected.checksum: Removed.
        * platform/mac/editing/deleting/delete-mixed-editable-content-001-expected.png: Removed.
        * platform/mac/editing/deleting/delete-mixed-editable-content-001-expected.txt: Removed.
        * platform/qt/editing/deleting/5390681-expected.txt: Removed.
        * platform/qt/editing/deleting/delete-mixed-editable-content-001-expected.txt: Removed.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@70448 268f45cc-cd09-0410-ab3c-d52691b4dbfc