Redo r156078.

* platform/mac-lion/editing/selection/vertical-rl-ltr-extend-line-backward-wrap-expected.txt: Added.
* platform/mac-lion/editing/selection/vertical-rl-ltr-extend-line-forward-wrap-expected.txt: Added.
* platform/mac-wk2/editing/selection/vertical-rl-ltr-extend-line-backward-wrap-expected.txt: Removed.
* platform/mac-wk2/editing/selection/vertical-rl-ltr-extend-line-forward-wrap-expected.txt: Removed.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@156080 268f45cc-cd09-0410-ab3c-d52691b4dbfc