Do not change state of More/less settings button until printer capabilities are retrieved to avoid …

chrome/browser/resources/print_preview/settings/more_settings.js

 // Copyright 2014 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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Toggles visibility of the specified printing options sections.
    * @param {!print_preview.DestinationStore} destinationStore To listen for
@@ skipping 94 matching lines @@
      * Updates the component appearance according to the current state.
      * @param {boolean} noAnimation Whether section visibility transitions
      *     should not be animated.
      * @private
      */
     updateState_: function(noAnimation) {
       if (!this.firstDestinationReady_) {
         fadeOutElement(this.getElement(), noAnimation);
         return;
       }
+      // When capabilities are not known yet, don't change the state to avoid
+      // unnecessary fade in/out cycles.
+      if (!this.capabilitiesReady_)
+        return;
 
       var all = this.settingsToShow_ == MoreSettings.SettingsToShow.ALL;
       this.getChildElement('.more-settings-label').textContent =
           loadTimeData.getString(all ? 'lessOptionsLabel' : 'moreOptionsLabel');
       var iconEl = this.getChildElement('.more-settings-icon');
       iconEl.classList.toggle('more-settings-icon-plus', !all);
       iconEl.classList.toggle('more-settings-icon-minus', all);
 
       var availableSections = this.settingsSections_.reduce(
           function(count, section) {
             return count + (section.isAvailable() ? 1 : 0);
           }, 0);
 
       // Magic 6 is chosen as the number of sections when it still feels like
-      // manageable and not too crowded. Also, when capabilities are not know
-      // yet, ignore this limit to avoid unnecessary fade in/out cycles.
+      // manageable and not too crowded.
       var hasSectionsToToggle =
-          (availableSections > 6 || !this.capabilitiesReady_) &&
+          availableSections > 6 &&
           this.settingsSections_.some(function(section) {
             return section.hasCollapsibleContent();
           });
 
       if (hasSectionsToToggle)
         fadeInElement(this.getElement(), noAnimation);
       else
         fadeOutElement(this.getElement(), noAnimation);
 
       var collapseContent =
           this.settingsToShow_ == MoreSettings.SettingsToShow.MOST_POPULAR &&
           hasSectionsToToggle;
       this.settingsSections_.forEach(function(section) {
         section.setCollapseContent(collapseContent, noAnimation);
       });
     }
   };
 
   // Export
   return {
     MoreSettings: MoreSettings
   };
 });