Add new Telemetry tests to get CPU and memory usage for idle and flinging two test scenarios. Mirro…

chrome/test/media_router/telemetry/benchmarks/pagesets/common.js

 /**
  * Copyright 2016 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
- * @fileoverview Common APIs for presentation integration tests.
+ * @fileoverview Common APIs for media router performance tests.
  *
  */
 
-var startSessionPromise = null;
-var startedSession = null;
-var reconnectedSession = null;
-var presentationUrl = "http://www.google.com/#__testprovider__=true";
-var startSessionRequest = new PresentationRequest(presentationUrl);
-var defaultRequestSessionId = null;
+var initialized = false;
+var currentSession = null;
+var currentMedia = null;
 
-window.navigator.presentation.defaultRequest = startSessionRequest;
-window.navigator.presentation.defaultRequest.onconnectionavailable = function(e)
-{
-  defaultRequestSessionId = e.connection.id;
-};
+
+window['__onGCastApiAvailable'] = function(loaded, errorInfo) {
+  if (loaded) {
+    initializeCastApi();
+  } else {
+    console.log(errorInfo);
+  }
+}
 
 /**
- * Waits until one device is available.
+ * Initialize Cast APIs.
  */
-function waitUntilDeviceAvailable() {
-  startSessionRequest.getAvailability(presentationUrl).then(
-    function(availability) {
-      console.log('availability ' + availability.value + '\n');
-      if (availability.value) {
-        console.log('device available');
-      } else {
-        availability.onchange = function(newAvailability) {
-          if (newAvailability)
-            console.log('got new availability');
-        }
-      }
-  }).catch(function(){
-      console.log('error');
+function initializeCastApi() {
+  // Load Cast APIs
+  console.info('Initializing API');
+  var sessionRequest = new chrome.cast.SessionRequest(
+    chrome.cast.media.DEFAULT_MEDIA_RECEIVER_APP_ID);
+  var apiConfig = new chrome.cast.ApiConfig(
+    sessionRequest,
+    null, // session listener
+    function(availability) { // receiver listener
+      console.info('Recevier listener: ' + JSON.stringify(availability));

[mark a. foltz, 2016/04/13 20:20:03]

Consider using the console format specifier %O for objects, instead of
stringifying them; this is really a personal preference though.

https://developer.chrome.com/devtools/docs/console-api#consolelogobject-object

[Lei Lei, 2016/04/14 01:55:13]

Thanks for the suggestion, I didn't know I can format the object as this way. 

I tried it, it works well in console, and prints out the correct logs.
Unfortunately the log from console.log with any formatter doesn't work in
chrome_debug.log, it just prints out the format specifiers, e.g 'error %s'. I
need the chrome debug log for debugging, since Telemetry will pause the test if
I open the developer tools during the test. But I can get the whole chrome debug
log after the test finishes.

+      initialized = true;
+  });
+  chrome.cast.initialize(
+    apiConfig,
+    function() {  // Successful callback
+      console.info('Initialize successfully');
+    },
+    function(error) { // Error callback
+      console.info('Initialize failed, error: ' + JSON.stringify(error));
   });
 }
 
 /**
- * Starts session.
+ * Start a new session for flinging scenario.
  */
-function startSession() {
-  startSessionPromise = startSessionRequest.start();
-  console.log('start session');
+function startFlingingSession() {
+  console.info('Starting Session');
+  chrome.cast.requestSession(
+    function(session) { // Request session successful callback
+      console.info('Request session successfully');
+      currentSession = session;
+    },
+    function(error) { // Request session Error callback
+      console.info('Request session failed, error: ' + JSON.stringify(error));
+  });
 }
 
 /**
- * Checks if the session has been started successfully.
+ * Loads the specific video on Chromecast.

[mark a. foltz, 2016/04/13 20:20:03]

Mention that the URL must point to a video/mp4 file.

[Lei Lei, 2016/04/14 01:55:13]

Done.

  */
-function checkSession() {
-  if (!startSessionPromise) {
-    sendResult(false, 'Did not attempt to start session');
-  } else {
-    startSessionPromise.then(function(session) {
-      if(!session) {
-        console.log('Failed to start session');
-      } else {
-        // set the new session
-        startedSession = session;
-        console.log('Session has been started');
-      }
-    }).catch(function() {
-      // terminate old session if exists
-      terminateSession();
-      console.log('Failed to start session');
-    })
+function loadMedia(mediaUrl) {
+  if (!currentSession) {
+    console.warn('Cannot load media without a live session');
   }
+  console.info('loading ' + mediaUrl);
+  var mediaInfo = new chrome.cast.media.MediaInfo(mediaUrl, 'video/mp4');
+  var request = new chrome.cast.media.LoadRequest(mediaInfo);
+  request.autoplay = true;
+  request.currentTime = 0;
+  currentSession.loadMedia(request,
+    function(media) {
+      console.info('Load media successfully');
+      currentMedia = media;
+    },
+    function(error) { // Error callback
+      console.info('Load media failed, error: ' + JSON.stringify(error));
+  });
 }
 
 /**
- * Terminates current session.
+ * Stops current session.
  */
-function terminateSession() {
-  if (startedSession) {
-    startedSession.terminate();
+function stopSession() {
+  if (currentSession) {
+    currentSession.stop(
+      function() {
+        console.info('Stop session successfully');
+        currentSession = null;
+      },
+      function(error) { // Error callback
+        console.info('Stop session failed, error: ' + JSON.stringify(error));
+    });
   }
 }
-