MD Settings: Restore focus after closing dialogs, for passwords page.

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

Index: chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.js
diff --git a/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.js b/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.js
index c4e9640894142e1fa91c0321e823429ac25fcdca..ea247205be16177c978995dc91fb153564078e86 100644
--- a/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.js
+++ b/chrome/browser/resources/settings/passwords_and_forms_page/passwords_section.js
@@ -216,6 +216,13 @@ Polymer({
   },
 
   /**
+   * The element to return focus to, when the currently active dialog is
+   * closed.
+   * @private {?HTMLElement}
+   */
+  activeDialogAnchor_: null,
+
+  /**
    * @type {PasswordManager}
    * @private
    */
@@ -298,6 +305,8 @@ Polymer({
   /** @private */
   onPasswordEditDialogClosed_: function() {
     this.showPasswordEditDialog_ = false;
+    this.activeDialogAnchor_.focus();
+    this.activeDialogAnchor_ = null;
   },
 
   /**
@@ -361,13 +370,14 @@ Polymer({
    */
   onPasswordMenuTap_: function(e) {
     var menu = /** @type {!CrActionMenuElement} */(this.$.menu);
-    var target = /** @type {!Element} */(Polymer.dom(e).localTarget);
+    var target = /** @type {!HTMLElement} */(Polymer.dom(e).localTarget);
     var passwordUiEntryEvent = /** @type {!PasswordUiEntryEvent} */(e);
 
     this.activePassword =
         /** @type {!chrome.passwordsPrivate.PasswordUiEntry} */ (
             passwordUiEntryEvent.model.item);
     menu.showAt(target);
+    this.activeDialogAnchor_ = target;
   },
 
   /**