[DevTools] Migrate inspector-protocol/emulation tests to new harness

third_party/WebKit/LayoutTests/inspector-protocol/emulation/device-emulation-controls.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startBlank('Tests that form controls are rendered with correct theme. See crbug.com/591315.');
+
+  var DeviceEmulator = await testRunner.loadScript('../resources/device-emulator.js');
+  var deviceEmulator = new DeviceEmulator(testRunner, session);
+  await deviceEmulator.emulate(800, 600, 1);
+
+  var viewport = 'none';
+  testRunner.log(`Loading page with viewport=${viewport}`);
+  await session.navigate('../resources/device-emulation.html?' + viewport);
+
+  testRunner.log(await session.evaluate(`dumpMetrics(true)`));
+  testRunner.log(await session.evaluate(`
+    var input = document.createElement('input');
+    input.type = 'radio';
+    document.body.appendChild(input);
+    'measured radio: ' + input.offsetWidth + 'x' + input.offsetHeight
+  `));
+  testRunner.log(await session.evaluate(`
+    var input = document.createElement('input');
+    input.type = 'checkbox';
+    document.body.appendChild(input);
+    'measured checkbox: ' + input.offsetWidth + 'x' + input.offsetHeight
+  `));
+  testRunner.completeTest();
+})