Destroy ResourceBundle instance when ViewTestSuite is shutdown.

I missed this when I added the call to InitSharedInstanceWithPakPath()
in r234537, crrev.com/234537

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

Review URL: https://codereview.chromium.org/83733007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@237006 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 237006