MD Settings: Remove unnecessary importHtml() calls in site-settings tests.

chrome/test/data/webui/settings/protocol_handlers_tests.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.
 
 /** @fileoverview Suite of tests for protocol_handlers. */
 cr.define('protocol_handlers', function() {
   function registerTests() {
     suite('ProtocolHandlers', function() {
       /**
        * A dummy protocol handler element created before each test.
@@ skipping 36 matching lines @@
           protocol: 'webcal'
         }
       ];
 
       /**
        * The mock proxy object to use during test.
        * @type {TestSiteSettingsPrefsBrowserProxy}
        */
       var browserProxy = null;
 
-      // Import necessary html before running suite.
-      suiteSetup(function() {
-        return PolymerTest.importHtml(
-           'chrome://md-settings/site_settings/protocol_handlers.html');
-      });
-
       setup(function() {
         browserProxy = new TestSiteSettingsPrefsBrowserProxy();
         settings.SiteSettingsPrefsBrowserProxyImpl.instance_ = browserProxy;
       });
 
       teardown(function() {
         testElement.remove();
         testElement = null;
       });
 
@@ skipping 94 matching lines @@
         browserProxy.setProtocolHandlers(protocols);
         return testButtonFlow('defaultButton', 'setProtocolDefault');
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });