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

third_party/WebKit/LayoutTests/inspector-protocol/runtime/runtime-getProperties-preview.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startBlank(``);
+
+  function printResult(response) {
+    for (var property of response.result.result) {
+      if (!property.value || property.name === '__proto__')
+        continue;
+      if (property.value.preview)
+        testRunner.log(property.name + ' : ' + JSON.stringify(property.value.preview, null, 4));
+      else
+        testRunner.log(property.name + ' : ' + property.value.description);
+    }
+  }
+
+  var response = await dp.Runtime.evaluate({expression: `({p1: {a:1}, p2: {b:'foo', bb:'bar'}})`});
+  printResult(await dp.Runtime.getProperties({objectId: response.result.result.objectId, ownProperties: true }));
+  printResult(await dp.Runtime.getProperties({objectId: response.result.result.objectId, ownProperties: true, generatePreview: true }));
+  testRunner.completeTest();
+})