[Pywebsocket PerformanceTests 1/2] Add PerformanceTests/Pywebsocket

PerformanceTests/Pywebsocket/resources/util_performance_test.js

+function perfTestAddToLog(text) {
+  PerfTestRunner.log(text);
+}
+
+function perfTestAddToSummary(text) {
+}
+
+function perfTestMeasureValue(value) {
+  PerfTestRunner.measureValueAsync(value);
+  PerfTestRunner.gc();
+}
+
+function perfTestNotifyAbort() {
+  PerfTestRunner.logFatalError("benchmark aborted");
+}
+
+const numIterations = 10;
+const numWarmUpIterations = 5;
+
+function getConfigForPerformanceTest(connectionType, dataType, async,
+                                     verifyData) {
+  return {
+    prefixUrl:
+      connectionType === 'WebSocket' ? 'ws://localhost:8001/benchmark_helper' :
+      'http://localhost:8001/073be001e10950692ccbf3a2ad21c245', // XHR or fetch
+    printSize: true,
+    numXHRs: 1,
+    numFetches: 1,
+    numSockets: 1,
+    numIterations: numIterations + numWarmUpIterations + 1,
+    numWarmUpIterations: numWarmUpIterations,
+    minTotal: 10240000,
+    startSize: 10240000,
+    stopThreshold: 10240000,
+    multipliers: [2],
+    verifyData: verifyData,
+    dataType: dataType,
+    async: async,
+    addToLog: perfTestAddToLog,
+    addToSummary: perfTestAddToSummary,
+    measureValue: perfTestMeasureValue,
+    notifyAbort: perfTestNotifyAbort
+  };
+}
+
+function startPerformanceTest(connectionType, benchmarkName,
+    dataType, isWorker, async, verifyData){
+  var config = getConfigForPerformanceTest(connectionType, dataType, async,
+                                           verifyData);
+
+  initWorker(connectionType, 'http://localhost:8001');
+
+  PerfTestRunner.prepareToMeasureValuesAsync({
+      done: function() { doAction(config, isWorker, 'stop'); },
+      unit: 'ms',
+      dromaeoIterationCount: numIterations
+  });
+
+  doAction(config, isWorker, benchmarkName);
+}