fix(build): don’t read out chrome perflogs during e2e tests

We do this as we are seeing flakes in Chrome with ECONNREFUSED.

Also reuses the same browser window.

Also reenables the infinite scroll benchmark

Closes angular#1137

Author: tbosch

modules/benchmarks/e2e_test/naive_infinite_scroll_perf.es6

@@ -7,8 +7,7 @@ describe('ng2 naive infinite scroll benchmark', function () {
   afterEach(perfUtil.verifyNoBrowserErrors);
 
   [1, 2, 4].forEach(function(appSize) {
-    // TODO: reenable these tests when the are passing. See issue #1137
-    xit('should run scroll benchmark and collect stats for appSize = ' +
+    it('should run scroll benchmark and collect stats for appSize = ' +
         appSize, function(done) {
       perfUtil.runBenchmark({
         url: URL,

protractor-shared.js

@@ -135,7 +135,7 @@ var config = exports.config = {
     // During benchmarking, we need to open a new browser
     // for every benchmark, otherwise the numbers can get skewed
     // from other benchmarks (e.g. Chrome keeps JIT caches, ...)
-    if (argv['benchmark']) {
+    if (argv['benchmark'] && !argv['dryrun']) {
       var originalBrowser = browser;
       var _tmpBrowser;
       beforeEach(function() {
@@ -225,19 +225,21 @@ exports.createBenchpressRunner = function(options) {
       'lang': options.lang,
       'runId': runId
     }),
-    benchpress.MultiReporter.createBindings([
-      benchpress.ConsoleReporter,
-      benchpress.JsonFileReporter
-    ]),
     benchpress.JsonFileReporter.BINDINGS,
     benchpress.bind(benchpress.JsonFileReporter.PATH).toValue(resultsFolder)
   ];
   if (!argv['dryrun']) {
     bindings.push(benchpress.Validator.bindTo(benchpress.RegressionSlopeValidator));
     bindings.push(benchpress.bind(benchpress.RegressionSlopeValidator.SAMPLE_SIZE).toValue(argv['sample-size']));
+    bindings.push(benchpress.MultiReporter.createBindings([
+      benchpress.ConsoleReporter,
+      benchpress.JsonFileReporter
+    ]));
   } else {
     bindings.push(benchpress.Validator.bindTo(benchpress.SizeValidator));
     bindings.push(benchpress.bind(benchpress.SizeValidator.SAMPLE_SIZE).toValue(1));
+    bindings.push(benchpress.MultiReporter.createBindings([]));
+    bindings.push(benchpress.MultiMetric.createBindings([]));
   }
 
   global.benchpressRunner = new benchpress.Runner(bindings);