Site Settings Desktop: Implement Zoom Levels category.

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

Index: chrome/test/data/webui/settings/cr_settings_browsertest.js
diff --git a/chrome/test/data/webui/settings/cr_settings_browsertest.js b/chrome/test/data/webui/settings/cr_settings_browsertest.js
index 2f5ea0ca4e01a4c951a32d6130ef7b4a16e41a24..0250ff8668384df8a989c6ef6f57214b0c1f5f9c 100644
--- a/chrome/test/data/webui/settings/cr_settings_browsertest.js
+++ b/chrome/test/data/webui/settings/cr_settings_browsertest.js
@@ -469,6 +469,7 @@ CrSettingsSiteSettingsTest.prototype = {
     'site_settings_category_tests.js',
     'test_browser_proxy.js',
     'test_site_settings_prefs_browser_proxy.js',
+    'zoom_levels_tests.js',
   ]),
 };
 
@@ -477,6 +478,7 @@ TEST_F('CrSettingsSiteSettingsTest', 'SiteSettings', function() {
   site_details_permission.registerTests();
   site_list.registerTests();
   site_settings_category.registerTests();
+  zoom_levels.registerTests();
 
   mocha.run();
 });