[Passwords] Show bulk check banner to non-syncing users.

This CL also shows the bulk check banner to users who are signed in
but do not sync.

Bug: 1047726, 1067560
Change-Id: I6f2dd091c541d67c2f1fa895df0a332e23d5f363
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2134827Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
Commit-Queue: Christoph Schwering <schwering@google.com>
Cr-Commit-Position: refs/heads/master@{#756218}

chrome/browser/resources/settings/autofill_page/passwords_section.js

@@ -44,6 +44,11 @@ Polymer({
   ],
 
   properties: {
+    // <if expr="not chromeos">
+    /** @private */
+    storedAccounts_: Array,
+    // </if>
+
     /** Preferences state. */
     prefs: {
       type: Object,
@@ -98,7 +103,7 @@ Polymer({
     signedIn_: {
       type: Boolean,
       value: true,
-      computed: 'computeSignedIn_(syncStatus_.signedIn)',
+      computed: 'computeSignedIn_(syncStatus_, storedAccounts_)',
     },
 
     /** @private */
@@ -299,6 +304,13 @@ Polymer({
     syncBrowserProxy.sendSyncPrefsChanged();
     this.addWebUIListener('sync-prefs-changed', syncPrefsChanged);
 
+    // For non-ChromeOS, also check whether accounts are available.
+    // <if expr="not chromeos">
+    const storedAccountsChanged = accounts => this.storedAccounts_ = accounts;
+    syncBrowserProxy.getStoredAccounts().then(storedAccountsChanged);
+    this.addWebUIListener('stored-accounts-updated', storedAccountsChanged);
+    // </if>
+
     Polymer.RenderStatus.afterNextRender(this, function() {
       Polymer.IronA11yAnnouncer.requestAvailability();
     });
@@ -387,7 +399,9 @@ Polymer({
    * @private
    */
   computeSignedIn_() {
-    return !!this.syncStatus_ && !!this.syncStatus_.signedIn;
+    return !!this.syncStatus_ && !!this.syncStatus_.signedIn ?
+        !this.syncStatus_.hasError :
+        (!!this.storedAccounts_ && this.storedAccounts_.length > 0);
   },
 
   /**