Sign out profile when local_state file has been changed.

components/signin/core/browser/signin_metrics.h

Index: components/signin/core/browser/signin_metrics.h
diff --git a/components/signin/core/browser/signin_metrics.h b/components/signin/core/browser/signin_metrics.h
index 0ba0eb04b0d03bd2e2fe8c6c1c72a5ea891f912d..9d42eae69df6a771a86ba65cee779d3ddef91a44 100644
--- a/components/signin/core/browser/signin_metrics.h
+++ b/components/signin/core/browser/signin_metrics.h
@@ -46,7 +46,8 @@ enum ProfileSignout {
   // The credentials are being transfered to a new profile, so the old one is
   // signed out.
   TRANSFER_CREDENTIALS,
-
+  // The credentials becomes invalid, signout if force-sign-in policy is true.
+  AUTHENTICATION_FAILED,

[Roger Tawa OOO till Jul 10th, 2017/02/27 22:08:26]

Could we add "force signin" to this constants?  Maybe:

   AUTHENTICATION_FAILED_WITH_FORCED_SIGNIN

[zmin, 2017/03/07 20:06:42]

Done.

   // Keep this as the last enum.
   NUM_PROFILE_SIGNOUT_METRICS,
 };