Autoclick on md-settings is synced with autoclick on settings.

chrome/browser/resources/settings/a11y_page/a11y_page.js

Index: chrome/browser/resources/settings/a11y_page/a11y_page.js
diff --git a/chrome/browser/resources/settings/a11y_page/a11y_page.js b/chrome/browser/resources/settings/a11y_page/a11y_page.js
index 0c56580f9e437e85cf4375adcfe220c8e6cedc67..70f828f7200b22c32742ba8c5018e7e2d9e10d47 100644
--- a/chrome/browser/resources/settings/a11y_page/a11y_page.js
+++ b/chrome/browser/resources/settings/a11y_page/a11y_page.js
@@ -25,7 +25,24 @@ Polymer({
       type: Object,
       notify: true,
     },
-
+    autoClickDelayOptions_: {

[michaelpg, 2016/07/16 08:36:27]

this should be inside the <if expr="chromeos"> below, because:

1. stripping out unused code on other platforms reduces startup time and
resource size
2. you'll get JS errors on non-chromeos otherwise

[sammiequon, 2016/07/20 17:19:31]

Done.

+     readOnly: true,

[michaelpg, 2016/07/16 08:36:27]

2 space indent, not 1

[sammiequon, 2016/07/20 17:19:31]

Done.

+      type: Array,
+      value: function() {
+        return [
+          {value: 600,
+           name: loadTimeData.getString('delayBeforeClickExtremelyShort')},
+          {value: 800,
+           name: loadTimeData.getString('delayBeforeClickVeryShort')},
+          {value: 1000,
+           name: loadTimeData.getString('delayBeforeClickShort')},
+          {value: 2000,
+           name: loadTimeData.getString('delayBeforeClickLong')},
+          {value: 4000,
+           name: loadTimeData.getString('delayBeforeClickVeryLong')},
+        ];
+      },
+    },
 <if expr="chromeos">
     /**
      * Whether to show experimental accessibility features.