benchmarks: add ng2_ftl and ng2_switch_ftl benchmarks (#11963)

These benchmarks take the output of AoT
and manually tweaks it to explore possible
future changes to the compiler to produce
this output directly.

modules/e2e_util/e2e_util.ts

@@ -34,7 +34,9 @@ export function openBrowser(config: {
     browser.ignoreSynchronization = true;
   }
   var params = config.params || [];
-  params = params.concat([{name: 'bundles', value: cmdArgs.bundles}]);
+  if (!params.some((param) => param.name === 'bundles')) {
+    params = params.concat([{name: 'bundles', value: cmdArgs.bundles}]);
+  }
 
   var urlParams: string[] = [];
   params.forEach((param) => { urlParams.push(param.name + '=' + param.value); });