[Lacros] Implement unrecoverable Sync error action

Click on the "Sign in again" button will disable and re-enable sync.

Bug: 1260291
Change-Id: Id26c6370fdba6b32d81d992d575beab865561f19
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3602723
Auto-Submit: Alex Ilin <alexilin@chromium.org>
Reviewed-by: David Roger <droger@chromium.org>
Commit-Queue: Alex Ilin <alexilin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#998845}

chrome/browser/ui/views/profiles/profile_menu_view.cc

@@ -288,21 +288,23 @@ void ProfileMenuView::OnSyncErrorButtonClicked(AvatarSyncErrorType error) {
     case AvatarSyncErrorType::kManagedUserUnrecoverableError:
       chrome::ShowSettingsSubPage(browser(), chrome::kSignOutSubPage);
       break;
-    case AvatarSyncErrorType::kUnrecoverableError:
-#if BUILDFLAG(ENABLE_DICE_SUPPORT)
-      IdentityManagerFactory::GetForProfile(browser()->profile())
-          ->GetPrimaryAccountMutator()
-          ->RevokeSyncConsent(signin_metrics::USER_CLICKED_SIGNOUT_SETTINGS,
-                              signin_metrics::SignoutDelete::kIgnoreMetric);
+    case AvatarSyncErrorType::kUnrecoverableError: {
+      signin::IdentityManager* identity_manager =
+          IdentityManagerFactory::GetForProfile(browser()->profile());
+      // This error means that the Sync engine failed to initialize. Shutdown
+      // Sync engine by revoking sync consent.
+      identity_manager->GetPrimaryAccountMutator()->RevokeSyncConsent(
+          signin_metrics::USER_CLICKED_SIGNOUT_SETTINGS,
+          signin_metrics::SignoutDelete::kIgnoreMetric);
       Hide();
-      browser()->signin_view_controller()->ShowSignin(
-          profiles::BUBBLE_VIEW_MODE_GAIA_SIGNIN,
+      // Re-enable sync with the same primary account.
+      signin_ui_util::EnableSyncFromSingleAccountPromo(
+          browser(),
+          identity_manager->GetPrimaryAccountInfo(
+              signin::ConsentLevel::kSignin),
           signin_metrics::AccessPoint::ACCESS_POINT_AVATAR_BUBBLE_SIGN_IN);
-#else
-      // TODO(https://crbug.com/1260291): Add support for Lacros.
-      NOTIMPLEMENTED();
-#endif
       break;
+    }
     case AvatarSyncErrorType::kAuthError:
       Hide();
       signin_ui_util::ShowReauthForPrimaryAccountWithAuthError(