[ios] add manual fallback credit card cell

Bug: 845472
Change-Id: Ifc6f448c0000d4886a15aab5b06a979bd8dc63d6
Reviewed-on: https://chromium-review.googlesource.com/c/1303730
Commit-Queue: David Jean <djean@chromium.org>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#605649}
7 files changed