[Autofill] Remove the check(!field->is_focusable) for hidden credit cards form after user entered


Design Doc: https://docs.google.com/document/d/1Sm3Yh3xxIcvo3qF2HQpQzJYR3v7K15B516vidtLNYvY/edit?usp=sharing

Change-Id: If9d866d84cda3bf9b31c4db4792cfe6033e459cf
Bug: 899057
Reviewed-on: https://chromium-review.googlesource.com/c/1443629
Reviewed-by: Jared Saul <[email protected]>
Reviewed-by: Elly Fong-Jones <[email protected]>
Reviewed-by: Fabio Tirelo <[email protected]>
Commit-Queue: Hao Zhang <[email protected]>
Cr-Commit-Position: refs/heads/master@{#628429}
10 files changed