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

third_party/WebKit/LayoutTests/inspector-protocol/page/createIsolatedWorld.js

+(async function(testRunner) {
+  let {page, session, dp} = await testRunner.startBlank('');
+
+  var reportedExecutionContextId;
+  dp.Runtime.onExecutionContextCreated(message => {
+    if (message.params.context.auxData.frameId !== mainFrameId)
+      return;
+    if (message.params.context.auxData.isDefault === false &&
+        message.params.context.name === 'Test world') {
+      reportedExecutionContextId = message.params.context.id;
+    } else {
+      testRunner.log('fail - main world created.');
+      testRunner.log(JSON.stringify(message.params));
+      testRunner.completeTest();
+    }
+  });
+
+  await dp.Runtime.enable();
+  testRunner.log('Runtime enabled');
+
+  await dp.Page.enable();
+  testRunner.log('Page enabled');
+
+  var response = await dp.Page.getResourceTree();
+  var mainFrameId = response.result.frameTree.frame.id;
+  testRunner.log('Main Frame obtained');
+
+  response = await dp.Page.createIsolatedWorld({frameId: mainFrameId, worldName: 'Test world'});
+  if (reportedExecutionContextId === response.result.executionContextId)
+    testRunner.log('PASS - execution context id match.');
+  else
+    testRunner.log('fail - execution context id differ.');
+  testRunner.completeTest();
+})