[MD Settings][People] Force sign out only in the case of unrecoverable error

chrome/browser/resources/settings/people_page/people_page.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview
  * 'settings-people-page' is the settings page containing sign-in settings.
  */
 Polymer({
   is: 'settings-people-page',
@@ skipping 282 matching lines @@
   /** @private */
   onSyncTap_: function() {
     assert(this.syncStatus.signedIn);
     assert(this.syncStatus.syncSystemEnabled);
 
     if (!this.isSyncStatusActionable_(this.syncStatus))
       return;
 
     switch (this.syncStatus.statusAction) {
       case settings.StatusAction.REAUTHENTICATE:
+        this.syncBrowserProxy_.startSignIn();
+        break;
+      case settings.StatusAction.SIGNOUT_AND_SIGNIN:
 <if expr="chromeos">
         this.syncBrowserProxy_.attemptUserExit();
 </if>
 <if expr="not chromeos">
         if (this.syncStatus.domain)
           settings.navigateTo(settings.Route.SIGN_OUT);
         else {
           // Silently sign the user out without deleting their profile and
           // prompt them to sign back in.
           this.syncBrowserProxy_.signOut(false);
@@ skipping 154 matching lines @@
 
   /**
    * @param {!settings.SyncStatus} syncStatus
    * @return {boolean} Whether to show the "Sign in to Chrome" button.
    * @private
    */
   showSignin_: function(syncStatus) {
     return !!syncStatus.signinAllowed && !syncStatus.signedIn;
   },
 });