"API replacement summary:
- AccountTrackerService::Observer::OnAccountRemoved => IdentityManager::Observer::OnAccountRemovedWithInfo
"

Let me take this bug.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8f007a1cc45e80f9c5fd4277afbd2baa1580eebf

commit 8f007a1cc45e80f9c5fd4277afbd2baa1580eebf
Author: Gyuyoung Kim <gyuyoung@igalia.com>
Date: Tue Jan 22 13:51:54 2019

s13n: Replace use of AccountTrackerService in password_store_signin_notifier_impl.cc

As a step to use IdentityManager, this CL makes PasswordStoreSigninNotifierImpl implement
IdentityManager::Observer::OnAccountRemoveWithInfo instead of
AccountTrackerService::Observer::OnAccountRemoved.

Bug:  922753 ,  922754 
Change-Id: I67195754277cf9316d268e365eddcd9df1ea5c13
Reviewed-on: https://chromium-review.googlesource.com/c/1426502
Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Gyuyoung Kim <gyuyoung@igalia.com>
Cr-Commit-Position: refs/heads/master@{#624766}
[modify] https://crrev.com/8f007a1cc45e80f9c5fd4277afbd2baa1580eebf/chrome/browser/password_manager/password_store_signin_notifier_impl.cc
[modify] https://crrev.com/8f007a1cc45e80f9c5fd4277afbd2baa1580eebf/chrome/browser/password_manager/password_store_signin_notifier_impl.h

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/88bc9e211098e9662dd5cfbc186bbeaca2d3c297

commit 88bc9e211098e9662dd5cfbc186bbeaca2d3c297
Author: Gyuyoung Kim <gyuyoung@igalia.com>
Date: Tue Jan 22 15:51:53 2019

fixup! s13n: Replace use of AccountTrackerService in password_store_signin_notifier_impl.cc

Missed to remove the include of account_tracker_service_factory.h in the previous CL.

Bug:  922753 
Change-Id: I9e9e4f33401d72cebaa3d2418a27e793ca1deac7
Reviewed-on: https://chromium-review.googlesource.com/c/1426255
Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Gyuyoung Kim <gyuyoung@igalia.com>
Cr-Commit-Position: refs/heads/master@{#624791}
[modify] https://crrev.com/88bc9e211098e9662dd5cfbc186bbeaca2d3c297/chrome/browser/password_manager/password_store_signin_notifier_impl.cc