ui: Make views_unittests not depend on chrome's packed_resources target.

Depending on chrome's target is a layer violation, so we should break that dependency.

BUG=299841,176960,144345
TEST=views_unittests
R=tony@chromium.org

Review URL: https://codereview.chromium.org/45753004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@234537 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 234537