[Hotword] Make ConfirmDialog subclass from SettingsDialog

chrome/browser/resources/options/preferences.js

Index: chrome/browser/resources/options/preferences.js
diff --git a/chrome/browser/resources/options/preferences.js b/chrome/browser/resources/options/preferences.js
index 6f8cc8294176437ecb8a82f8dbcb37db9086fac6..ef1ed18cf903a61d12cb2a0eb772d3b07949f257 100644
--- a/chrome/browser/resources/options/preferences.js
+++ b/chrome/browser/resources/options/preferences.js
@@ -214,12 +214,11 @@ cr.define('options', function() {
 
       var event = new Event(name);
       // Decorate pref value as CoreOptionsHandler::CreateValueForPref() does.
-      event.value = {
-        value: value,
-        recommendedValue: pref.orig.recommendedValue,
-        disabled: pref.orig.disabled,
-        uncommitted: true,
-      };
+      event.value = {value: value, uncommitted: true};
+      if (pref.orig) {
+        event.value.recommendedValue = pref.orig.recommendedValue;
+        event.value.disabled = pref.orig.disabled;
+      }
       this.dispatchEvent(event);
     },