The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/675c6892da37d31abf254e724d416387c839b921

commit 675c6892da37d31abf254e724d416387c839b921
Author: Owen Min <zmin@chromium.org>
Date: Tue Dec 11 18:40:43 2018

Re-add unsed access point of sign in metrics

Removing the deprecated enum option breaks metrics count. Add it back with
a deprecation message.

Bug:  913103 
Change-Id: Ia06712e466747989e38cf999dd199918e995a8c1
Reviewed-on: https://chromium-review.googlesource.com/c/1368632
Commit-Queue: Owen Min <zmin@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#615603}
[modify] https://crrev.com/675c6892da37d31abf254e724d416387c839b921/components/signin/core/browser/signin_metrics.h
[modify] https://crrev.com/675c6892da37d31abf254e724d416387c839b921/components/signin/core/browser/signin_metrics_unittest.cc

This CL needs to be merged into 72 as it fixes an issue that break metrics counting.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8a2f06768457aec18465f6c090ede6f0e669af51

commit 8a2f06768457aec18465f6c090ede6f0e669af51
Author: Owen Min <zmin@chromium.org>
Date: Wed Dec 12 17:55:05 2018

Merge "Re-add unsed access point of sign in metrics"

Merge this into M72.

Removing the deprecated enum option breaks metrics count. Add it back with
a deprecation message.

Bug:  913103 
Change-Id: Ia06712e466747989e38cf999dd199918e995a8c1
Reviewed-on: https://chromium-review.googlesource.com/c/1368632
Commit-Queue: Owen Min <zmin@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#615603}(cherry picked from commit 675c6892da37d31abf254e724d416387c839b921)
Reviewed-on: https://chromium-review.googlesource.com/c/1374156
Reviewed-by: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#290}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}
[modify] https://crrev.com/8a2f06768457aec18465f6c090ede6f0e669af51/components/signin/core/browser/signin_metrics.h
[modify] https://crrev.com/8a2f06768457aec18465f6c090ede6f0e669af51/components/signin/core/browser/signin_metrics_unittest.cc

The following revision refers to this bug: 
https://chromium.googlesource.com/chromium/src.git/+/8a2f06768457aec18465f6c090ede6f0e669af51

Commit: 8a2f06768457aec18465f6c090ede6f0e669af51
Author: zmin@chromium.org
Commiter: zmin@chromium.org
Date: 2018-12-12 17:55:05 +0000 UTC

Merge "Re-add unsed access point of sign in metrics"

Merge this into M72.

Removing the deprecated enum option breaks metrics count. Add it back with
a deprecation message.

Bug:  913103 
Change-Id: Ia06712e466747989e38cf999dd199918e995a8c1
Reviewed-on: https://chromium-review.googlesource.com/c/1368632
Commit-Queue: Owen Min <zmin@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Original-Commit-Position: refs/heads/master@{#615603}(cherry picked from commit 675c6892da37d31abf254e724d416387c839b921)
Reviewed-on: https://chromium-review.googlesource.com/c/1374156
Reviewed-by: Owen Min <zmin@chromium.org>
Cr-Commit-Position: refs/branch-heads/3626@{#290}
Cr-Branched-From: d897fb137fbaaa9355c0c93124cc048824eb1e65-refs/heads/master@{#612437}