GitLab

Methods OnPrimaryAccountSet/OnPrimaryAccountCleared are deprecated.
This cl removes artifacts used by these method overrides in
TestIdentityManagerObserver and replaces them with a single callback for
OnPrimaryAccountChanged.

Bug: 1158855
Change-Id: If0cd666626268c7e21fcde33d26a5c0cfbc298de
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2618438
Commit-Queue: Tanmoy Mollik <triploblastic@chromium.org>
Reviewed-by: Mihai Sardarescu <msarda@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842974}