[ios] add manual fallback credit card and address view controller

Added base class that should be used in passwords later.

Bug: 845472
Change-Id: I1c1d2204d920ae141448239cfeb1c1c5a0e93a20
Reviewed-on: https://chromium-review.googlesource.com/c/1319714
Commit-Queue: David Jean <djean@chromium.org>
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#606773}
7 files changed