Treat regular and always-on hotwording settings as mutually exclusive.

chrome/browser/resources/hotword/page_audio_manager.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('hotword', function() {
   'use strict';
 
   /**
    * Class used to manage the interaction between hotwording and the
    * NTP/google.com. Injects a content script to interact with NTP/google.com
@@ skipping 398 matching lines @@
       chrome.tabs.onActivated.removeListener(this.tabActivatedListener_);
       chrome.windows.onFocusChanged.removeListener(
           this.windowFocusChangedListener_);
     },
 
     /**
      * Update event listeners based on the current hotwording state.
      * @private
      */
     updateListeners_: function() {
-      var enabled = this.stateManager_.isEnabled() &&
-          !this.stateManager_.isAlwaysOnEnabled();
-      if (enabled) {
+      if (this.stateManager_.isSometimesOnEnabled()) {
         this.setupListeners_();
       } else {
         this.removeListeners_();
         this.stopHotwording_();
         this.disconnectAllClients_();
       }
     }
   };
 
   return {
     PageAudioManager: PageAudioManager
   };
 });