[ios] use coordinator base class for manual fill passwords

Bug: 845472
Change-Id: Ia214b22388823eee5baa82ffaeb0224981b63a12
Reviewed-on: https://chromium-review.googlesource.com/c/1337610
Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Commit-Queue: David Jean <djean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609251}
3 files changed