This method was removed in https://chromium-review.googlesource.com/c/chromium/src/+/1162173/. Please reopen if there is some work that still needs to be done here :).

Then we should probably remove the methods that were intended to replace those API from PrimaryAccountMutator. Re-opening (and renaming) bug.

This mean removing the following methods from PrimaryAccountMutator:
- IsClearingPrimaryAccountAllowed
- SetClearingPrimaryAccountAllowed

Driven by, CL https://chromium-review.googlesource.com/c/chromium/src/+/1378989.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/02d2a603883d494c18af9d2e5459cf8e36bf8693

commit 02d2a603883d494c18af9d2e5459cf8e36bf8693
Author: Antonio Gomes <tonikitoo@igalia.com>
Date: Mon Dec 17 13:00:10 2018

[s13n] Remove PrimaryAccountMutator APIs that intended to replace SigninManager::IsSignoutProhibited

This CL removes the following methods from PrimaryAccountMutator:

- IsClearingPrimaryAccountAllowed
- SetClearingPrimaryAccountAllowed

The methods were a replacement for SigninManager::IsSignoutProhibited()
and SigninManager::ProhibitSignOut(), but they got removed in
https://chromium-review.googlesource.com/c/chromium/src/+/1162173/.

BUG= 889903 

Change-Id: I959e5a6a8c02795284960042fa029b8395626c0d
Reviewed-on: https://chromium-review.googlesource.com/c/1378989
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/master@{#617098}
[modify] https://crrev.com/02d2a603883d494c18af9d2e5459cf8e36bf8693/services/identity/public/cpp/primary_account_mutator.h
[modify] https://crrev.com/02d2a603883d494c18af9d2e5459cf8e36bf8693/services/identity/public/cpp/primary_account_mutator_impl.cc
[modify] https://crrev.com/02d2a603883d494c18af9d2e5459cf8e36bf8693/services/identity/public/cpp/primary_account_mutator_impl.h