MD Settings: In /syncSetup clicking links in checkbox label should not check/uncheck.

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

 // Copyright 2016 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('settings_people_page_sync_page', function() {
   /**
    * @constructor
    * @implements {settings.SyncBrowserProxy}
    * @extends {settings.TestBrowserProxy}
    */
@@ skipping 222 matching lines @@
               function(prefs) {
                 var expected = getSyncAllPrefs();
                 expected.syncAllDataTypes = false;
                 expected.extensionsSynced = false;
                 assertEquals(JSON.stringify(expected), JSON.stringify(prefs));
               });
         }
         return browserProxy.whenCalled('setSyncDatatypes').then(verifyPrefs);
       });
 
+      test('ClickingLinkDoesNotChangeCheckboxValue', function() {
+        var syncAllDataTypesCheckbox = syncPage.$.syncAllDataTypesCheckbox;
+
+        // Uncheck the Sync All checkbox.
+        MockInteractions.tap(syncAllDataTypesCheckbox);
+
+        // Make sure the checkbox is enabled and checked
+        var link = syncPage.$.paymentLearnMore;

[dpapad, 2016/11/19 02:04:38]

Probably worth ensuring that the parentElement/parentNode is what you expect it
to be.

assertEquals('PAPER-CHECKBOX', link.parentNode.nodeName);

[scottchen, 2016/11/21 18:33:46]

Done.

+        assertFalse(link.parentNode.disabled);
+        assertTrue(link.parentNode.checked);
+
+        MockInteractions.tap(link);
+
+        // The checkbox value should be unchanged after clicking on the link

[dpapad, 2016/11/19 02:04:38]

Comments should have proper punctuation per style guide.

[scottchen, 2016/11/21 18:33:46]

Done.

+        assertTrue(link.parentNode.checked);
+      });
+
       test('RadioBoxesEnabledWhenUnencrypted', function() {
         // Verify that the encryption radio boxes are enabled.
         assertFalse(encryptWithGoogle.disabled);
         assertFalse(encryptWithPassphrase.disabled);
 
         assertTrue(encryptWithGoogle.checked);
 
         // Select 'Encrypt with passphrase' to create a new passphrase.
         assertFalse(!!syncPage.$$('#create-password-box'));
 
@@ skipping 192 matching lines @@
       });
     });
   }
 
   return {
     registerTests: function() {
       registerAdvancedSyncSettingsTests();
     },
   };
 });