[DevTools] Move inspector-protocol/accessibility tests to new harness

third_party/WebKit/LayoutTests/inspector-protocol/stylesheet-tracking-restart.js

 (async function(testRunner) {
   testRunner.log('This test checks that if style sheet is removed between two inspector launches it is not reported to frontend.');
   var page = await testRunner.createPage();
   var session = await page.createSession();
   await session.evaluate(`
     function createStyleSheet(textContent)
     {
         var styleElement = document.createElement('style');
         styleElement.textContent = textContent;
         document.head.appendChild(styleElement);
         return styleElement;
     }
     window.styleElement1 = createStyleSheet('body.class1 { color: red; } \\n /*# sourceURL=foo.css */');
     window.styleElement2 = createStyleSheet('body.class2 { color: green; } \\n /*# sourceURL=bar.css */');
   `);
   testRunner.log('\nRunning test');
   testRunner.log('Opening front-end for the first time');
   await runTest(session);
   testRunner.log('Closing inspector.');
   testRunner.log('\nRemoving style sheet.\n');
-  session.evaluate('setTimeout(() => document.head.removeChild(styleElement1), 0)');
+  session.evaluate('setTimeout(() => { document.head.removeChild(styleElement1); document.body.offsetWidth; }, 0)');
   await session.disconnect();
   testRunner.log('Reopening inspector.');
   session = await page.createSession();
   testRunner.log('Running test');
   testRunner.log('Opening front-end second time');
   await runTest(session);
   testRunner.completeTest();
   async function runTest(session) {
     var headersAdded = [];
     session.protocol.CSS.onStyleSheetAdded(response => headersAdded.push(response.params.header));
     var headersRemoved = [];
     session.protocol.CSS.onStyleSheetRemoved(response => headersRemoved.push(response.params.styleSheetId));
     testRunner.log('Enabling CSS domain.');
     session.protocol.DOM.enable();
     await session.protocol.CSS.enable();
     var headers = {};
     headersAdded.sort((a, b) => a.styleSheetId - b.styleSheetId);
     for (var header of headersAdded) {
       headers[header.styleSheetId] = header.sourceURL;
       testRunner.log(' - style sheet added: ' + header.sourceURL);
     }
     headersRemoved.sort();
     for (var styleSheetId of headersRemoved)
       testRunner.log(' - style sheet removed: ' + headers[styleSheetId]);
   }
 })