[rAc] Add a test to verify that enough space is reserved for the credit card icon.

BUG=327511
TEST=unit_tests
R=estade@chromium.org

Review URL: https://codereview.chromium.org/113533003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241137 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241137
testrequest is ignored. Also added wow64 attribute.

BUG=314521

Review URL: https://codereview.chromium.org/113633006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241138 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241138