MD Settings: Fix broken numeric prefs using boolean controls

chrome/test/data/webui/settings/settings_toggle_button_tests.js

 // Copyright 2015 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.
 
 /** @fileoverview Suite of tests for settings-toggle-button. */
 cr.define('settings_toggle_button', function() {
   function registerTests() {
     suite('SettingsToggleButton', function() {
       /**
        * Toggle button created before each test.
@@ skipping 92 matching lines @@
         assertEquals(1, prefNum.value);
       });
 
       test('numerical pref with custom values', function() {
         var prefNum = {
           key: 'test',
           type: chrome.settingsPrivate.PrefType.NUMBER,
           value: 5
         };
 
-        testElement._setNumericUncheckedValue(5);
+        testElement.numericUncheckedValue = 5;
 
         testElement.set('pref', prefNum);
         assertFalse(testElement.checked);
 
         MockInteractions.tap(testElement.$.control);
         assertTrue(testElement.checked);
         assertEquals(1, prefNum.value);
 
         MockInteractions.tap(testElement.$.control);
         assertFalse(testElement.checked);
         assertEquals(5, prefNum.value);
       });
 
       test('numerical pref with unknown inital value', function() {
         prefNum = {
           key: 'test',
           type: chrome.settingsPrivate.PrefType.NUMBER,
           value: 3
         };
 
-        testElement._setNumericUncheckedValue(5);
+        testElement.numericUncheckedValue = 5;
 
         testElement.set('pref', prefNum);
 
         // Unknown value should still count as checked.
         assertTrue(testElement.checked);
 
         // The control should not clobber an existing unknown value.
         assertEquals(3, prefNum.value);
 
         // Unchecking should still send the unchecked value to prefs.
         MockInteractions.tap(testElement.$.control);
         assertFalse(testElement.checked);
         assertEquals(5, prefNum.value);
 
         // Checking should still send the normal checked value to prefs.
         MockInteractions.tap(testElement.$.control);
         assertTrue(testElement.checked);
         assertEquals(1, prefNum.value);
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });