feat(aio): copy example code from angular.io

aio/content/examples/protractor-helpers.ts

@@ -0,0 +1,35 @@
+import { browser } from 'protractor';
+
+export var appLang = {
+  appIsTs: false,
+  appIsJs: false,
+  appIsDart: false,
+  appIsUnknown: false
+};
+
+export function describeIf(cond: boolean, name: string, func: () => void): void {
+  if (cond) {
+    describe(name, func);
+  } else {
+    xdescribe(name, func);
+  }
+}
+
+export function itIf(cond: boolean, name: string, func: (done: DoneFn) => void): void {
+  if (cond) {
+    it(name, func);
+  } else {
+    xit(name, func);
+  }
+}
+
+// protractor.config.js is set to ng2 mode by default, so we must manually
+// change it for upgradeAdapter tests
+export function setProtractorToNg1Mode(): void {
+  browser.rootEl = 'body';
+}
+
+export function setProtractorToHybridMode() {
+  setProtractorToNg1Mode();
+  browser.ng12Hybrid = true;
+}