[ios] Password generation todos

Addressed some password generation TODO, mainly for i18n strings and validation of fields.

Bug: 886583
Change-Id: I5069679607504e7c80d3d41f17f971918fe2ed89
Reviewed-on: https://chromium-review.googlesource.com/c/1429980
Commit-Queue: David Jean <djean@chromium.org>
Reviewed-by: Vadym Doroshenko <dvadym@chromium.org>
Cr-Commit-Position: refs/heads/master@{#633056}
2 files changed