MD Settings: Remove subpage animation when landing directly on it.

chrome/browser/resources/settings/basic_page/basic_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-basic-page' is the settings page containing the actual settings.
  */
 Polymer({
   is: 'settings-basic-page',
@@ skipping 49 matching lines @@
      * @private
      */
     showSecondaryUserBanner_: {
       type: Boolean,
       computed: 'computeShowSecondaryUserBanner_(hasExpandedSection_)',
     },
 // </if>
 
     /** @private {!settings.Route|undefined} */
     currentRoute_: Object,
+
+    shouldHideContainer: {

[michaelpg, 2017/04/27 20:00:20]

this should be added by the behavior - is there a need to override it?

[scottchen, 2017/05/01 19:25:06]

Looks like I don't need it.

+      type: Boolean,
+      notify: true,
+    }
   },
 
   listeners: {
     'subpage-expand': 'onSubpageExpanded_',
   },
 
   /** @override */
   attached: function() {
     this.currentRoute_ = settings.getCurrentRoute();
   },
@@ skipping 149 matching lines @@
 
   /**
    * @param {boolean} opened Whether the menu is expanded.
    * @return {string} Icon name.
    * @private
    */
   getArrowIcon_: function(opened) {
     return opened ? 'cr:arrow-drop-up' : 'cr:arrow-drop-down';
   },
 });