Bulk transfer of autofill bugs from jdonnelly@ to mahmadi@.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96

commit c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96
Author: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Date: Fri Aug 10 04:32:28 2018

[iOS][AF] Create FormInputAccessoryMediator

This CL moves all the logic from the FormInputAccessoryViewController
that is not directly related to managing its view to a new mediator.
Creates a consumer for the communication the the view controller.
Updates tests to use this mediator instead.
Removes the dependency on the CRWWebViewProxy.

Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I1b0f6c595f069ea45e04c9dacdc4437dbfe9041a
Bug: 661622, 727716,  845472 ,  847408 
Reviewed-on: https://chromium-review.googlesource.com/1130522
Reviewed-by: Moe Ahmadi <mahmadi@chromium.org>
Reviewed-by: Mark Cogan <marq@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#582056}
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/BUILD.gn
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/autofill_controller_unittest.mm
[add] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_input_accessory_consumer.h
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_input_accessory_view_controller.h
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_input_accessory_view_controller.mm
[add] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_input_accessory_view_handler.h
[add] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_input_accessory_view_handler.mm
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_input_accessory_view_provider.h
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_input_egtest.mm
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_suggestion_controller.mm
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/autofill/form_suggestion_controller_unittest.mm
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/passwords/BUILD.gn
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/passwords/password_controller_unittest.mm
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/ui/autofill/BUILD.gn
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/ui/autofill/form_input_accessory_coordinator.mm
[add] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/ui/autofill/form_input_accessory_mediator.h
[add] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/chrome/browser/ui/autofill/form_input_accessory_mediator.mm
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/web/public/web_state/ui/crw_web_view_proxy.h
[modify] https://crrev.com/c381b07f9e1095f0b5e26c5b92b52e7c0bda5c96/ios/web/web_state/ui/crw_web_view_proxy_impl.mm