Write some better focus tests for isherman@.

BUG=306484
R=isherman@chromium.org

Review URL: https://codereview.chromium.org/26233007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229706 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229706