[Autofill settings] Restore credit card icon images.

BUG=314532
TEST=chrome://settings/autofill shows card images next to credit card entries.
R=estade@chromium.org

Review URL: https://codereview.chromium.org/59173002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233159 0039d316-1c4b-4281-b951-d872f2087c98
Remove dead NavigationControllerImpl::IsRedirect.

BUG=none
TEST=No behavior change.

Review URL: https://codereview.chromium.org/59863004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233160 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233159
SVN changes up to revision 233160