[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: 926540
Reviewed-on: https://chromium-review.googlesource.com/c/1443629
Reviewed-by: Jared Saul <jsaul@google.com>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Reviewed-by: Fabio Tirelo <ftirelo@chromium.org>
Commit-Queue: Hao Zhang <hozhng@google.com>
Cr-Original-Commit-Position: refs/heads/master@{#628429}(cherry picked from commit d301711d4580bbf9d98542b6b9a745cfd54b454d)
Reviewed-on: https://chromium-review.googlesource.com/c/1452474
Cr-Commit-Position: refs/branch-heads/3683@{#177}
Cr-Branched-From: e51029943e0a38dd794b73caaf6373d5496ae783-refs/heads/master@{#625896}
10 files changed