MD Settings: Update Bluetooth toggle UI to match spec.

chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js

Index: chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
diff --git a/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js b/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
index 8fbd23ce5d1500b718d8be80c41649f92aa6ad75..e23ed90c9e17b244d0fc70244be821926f643269 100644
--- a/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
+++ b/chrome/browser/resources/settings/bluetooth_page/bluetooth_page.js
@@ -25,8 +25,6 @@ var bluetoothApis = bluetoothApis || {
 Polymer({
   is: 'settings-bluetooth-page',
 
-  behaviors: [I18nBehavior],
-
   properties: {
     /** Preferences state. */
     prefs: {
@@ -119,12 +117,14 @@ Polymer({
   },
 
   /**
+   * @param {boolean} enabled
+   * @param {string} onstr
+   * @param {string} offstr
    * @return {string}
    * @private
    */
-  getDescription_: function() {
-    return this.i18n(
-        this.bluetoothEnabled_ ? 'bluetoothEnabled' : 'bluetoothDisabled');
+  getOnOffString_: function(enabled, onstr, offstr) {
+    return enabled ? onstr : offstr;
   },
 
   /**