2011-01-13 Ojan Vafai <ojan@chromium.org>

2011-01-13  Ojan Vafai  <ojan@chromium.org>

        Reviewed by Adam Barth.

        simplify keyboard handling in code review tool
        https://bugs.webkit.org/show_bug.cgi?id=52407

        Now that we have DiffBlock containers, the only things that are
        focusable are previousComment nodes and DiffBlock containers
        that contain add/remove lines.

        Also, this means we show the focus border around the entire diff
        instead of just the first line.

        * code-review.js:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@75754 268f45cc-cd09-0410-ab3c-d52691b4dbfc