The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/33561dd9b74dc973b2a94bf1cc9d93f3402c3f28

commit 33561dd9b74dc973b2a94bf1cc9d93f3402c3f28
Author: Julie Jeongeun Kim <jkim@igalia.com>
Date: Fri Jan 18 07:53:19 2019

[s13n] Remove unused header from web_view_password_manager_client.mm

This CL removes unused header, web_view_signin_manager_factory.h, from
web_view_password_manager_client.mm

Bug:  920192 
Change-Id: Ibb3ba9670bb17017b4d104af75032d02aa97c0b1
Reviewed-on: https://chromium-review.googlesource.com/c/1420484
Reviewed-by: Hiroshi Ichikawa <ichikawa@chromium.org>
Commit-Queue: Julie Jeongeun Kim <jkim@igalia.com>
Cr-Commit-Position: refs/heads/master@{#624031}
[modify] https://crrev.com/33561dd9b74dc973b2a94bf1cc9d93f3402c3f28/ios/web_view/internal/passwords/web_view_password_manager_client.mm