[DevTools] Migrate inspector-protocol/{page,dom-snapshot} tests to new harness

third_party/WebKit/LayoutTests/inspector-protocol/page/enable-disable.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startBlank('');
+
+  var log = [];
+  dp.Timeline.onEventRecorded(msg => {
+    if (msg.params.record.type === 'Program') {
+      var children = msg.params.record.children;
+      for (var i = 0; i < children.length; ++i) {
+        var record = children[i];
+        if (record.type === 'GCEvent')
+          continue;
+        log.push('Timeline.eventRecorded: ' + record.type);
+      }
+      return;
+    }
+    testRunner.log('FAIL: Unexpected records arrived');
+    testRunner.logObject(msg);
+  });
+
+  await dp.Timeline.start();
+  log.push('Timeline started');
+  await dp.Page.enable();
+  log.push('Page enabled');
+  await dp.Page.disable();
+  log.push('Page disabled');
+
+  await dp.Domain.NotExistingCommand();
+  await dp.Timeline.stop();
+  log.push('Timeline stopped');
+  for (var i = 0; i < log.length; ++i)
+    testRunner.log(log[i]);
+  testRunner.completeTest();
+})