MD Settings: Prevent direct navigation to disabled Site Settings UI.

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

Index: chrome/test/data/webui/settings/site_list_tests.js
diff --git a/chrome/test/data/webui/settings/site_list_tests.js b/chrome/test/data/webui/settings/site_list_tests.js
index 852a35a93411995d58dc34844088e459eeca09a1..ba0bcf683f6583f8c0bd139ec9c398110944d076 100644
--- a/chrome/test/data/webui/settings/site_list_tests.js
+++ b/chrome/test/data/webui/settings/site_list_tests.js
@@ -650,7 +650,6 @@ cr.define('site_list', function() {
         setUpCategory(contentType, settings.PermissionValues.ALLOW, prefs);
         return browserProxy.whenCalled('getExceptionList').then(
             function(actualContentType) {
-              testElement.enableSiteSettings_ = true;
               assertEquals(contentType, actualContentType);
 
               // Required for firstItem to be found below.
@@ -781,7 +780,6 @@ cr.define('site_list', function() {
               var resolver = new PromiseResolver();
               testElement.async(resolver.resolve);
               return resolver.promise.then(function() {
-                testElement.enableSiteSettings_ = true;
                 // All Sites calls getExceptionList for all categories, starting
                 // with Cookies.
                 assertEquals(
@@ -825,7 +823,6 @@ cr.define('site_list', function() {
               var resolver = new PromiseResolver();
               testElement.async(resolver.resolve);
               return resolver.promise.then(function() {
-                testElement.enableSiteSettings_ = true;
                 // All Sites calls getExceptionList for all categories, starting
                 // with Cookies.
                 assertEquals(