[DevTools] New harness for inspector-protocol layout tests

third_party/WebKit/LayoutTests/inspector-protocol/cpu-profiler/console-profile.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startBlank('Tests that console.profile/profileEnd will record CPU profile when inspector front-end is connected.');
+
+  function fail(message) {
+    testRunner.log('FAIL: ' + message);
+    testRunner.completeTest();
+  }
+
+  function findFunctionInProfile(nodes, functionName) {
+    return nodes.some(n => n.callFrame.functionName === functionName);
+  }
+
+  var headers = [];
+  dp.Profiler.onConsoleProfileFinished(messageObject => {
+    headers.push({profile: messageObject['params']['profile'], title: messageObject['params']['title']});
+  });
+
+  dp.Profiler.enable();
+  await session.evaluate(`
+    (function collectProfiles() {
+      console.profile('outer');
+      console.profile(42);
+      console.profileEnd('outer');
+      console.profileEnd(42);
+    })();
+  `);
+
+  if (headers.length !== 2)
+    return fail('Cannot retrive headers: ' + JSON.stringify(messageObject, null, 4));
+
+  for (var i = 0; i < headers.length; i++) {
+    if (headers[i].title === '42') {
+      testRunner.log('SUCCESS: retrieved "42" profile');
+      if (!findFunctionInProfile(headers[i].profile.nodes, 'collectProfiles'))
+        return fail('collectProfiles function not found in the profile: ' + JSON.stringify(headers[i].profile, null, 4));
+      testRunner.log('SUCCESS: found "collectProfiles" function in the profile');
+      testRunner.completeTest();
+      return;
+    }
+  }
+
+  fail('Cannot find "42" profile header');
+})