MediaRecorder: parameterise certain browsertests by video codec and/or encode accelerator

content/test/data/media/mediarecorder_test.html

Index: content/test/data/media/mediarecorder_test.html
diff --git a/content/test/data/media/mediarecorder_test.html b/content/test/data/media/mediarecorder_test.html
index c5b078aa1b5d0891985bca7721957fd065520ff7..72a707f5f6738f5cefc51d4dd2ee2f5d56253069 100644
--- a/content/test/data/media/mediarecorder_test.html
+++ b/content/test/data/media/mediarecorder_test.html
@@ -87,7 +87,7 @@ function createAndStartMediaRecorder(stream, mimeType, slice) {
   return new Promise(function(resolve, reject) {
     document.getElementById('video').src = URL.createObjectURL(stream);
     var recorder = new MediaRecorder(stream, {'mimeType' : mimeType});
-    console.log('Recorder object created.');
+    console.log('Recorder object created, mimeType = ' + mimeType);
     if (slice != undefined) {
       recorder.start(slice);
       console.log('Recorder started with time slice', slice);
@@ -168,13 +168,14 @@ function testStartStopAndRecorderState() {
 // Tests that when MediaRecorder's start() function is called, some data is
 // made available by media recorder via dataavailable events, containing non
 // empty blob data.
-function testStartAndDataAvailable() {
+function testStartAndDataAvailable(codec) {
   var videoSize = 0;
   var emptyBlobs = 0;
   var timeStamps = [];
+  const mimeType = codec ? "video/webm;codecs=" + String(codec) : "";
   navigator.mediaDevices.getUserMedia(DEFAULT_CONSTRAINTS)
       .then(function(stream) {
-        return createAndStartMediaRecorder(stream, DEFAULT_RECORDER_MIME_TYPE);
+        return createAndStartMediaRecorder(stream, mimeType);
       })
       .then(function(recorder) {
         // Save history of Blobs received via dataavailable.
@@ -206,14 +207,14 @@ function testStartAndDataAvailable() {
 
 // Tests that when MediaRecorder's start(timeSlice) is called, some data
 // available events are fired containing non empty blob data.
-function testStartWithTimeSlice() {
+function testStartWithTimeSlice(codec) {
   var videoSize = 0;
   var emptyBlobs = 0;
   var timeStamps = [];
+  const mimeType = codec ? "video/webm;codecs=" + String(codec) : "";
   navigator.mediaDevices.getUserMedia(DEFAULT_CONSTRAINTS)
       .then(function(stream) {
-        return createAndStartMediaRecorder(stream, DEFAULT_RECORDER_MIME_TYPE,
-            DEFAULT_TIME_SLICE);
+        return createAndStartMediaRecorder(stream, mimeType,                                       DEFAULT_TIME_SLICE);
       })
       .then(function(recorder) {
         recorder.ondataavailable = function(event) {
@@ -234,12 +235,8 @@ function testStartWithTimeSlice() {
         assertTrue(emptyBlobs == 0, 'Recording has ' + emptyBlobs +
             ' empty blobs, there should be no such empty blobs.');
       })
-      .catch(function(err) {
-        return failTest(err.toString());
-      })
-      .then(function() {
-        reportTestSuccess();
-      });
+      .catch(function(err) { return failTest(err.toString()); })
+      .then(function() { reportTestSuccess(); });
 }
 
 
@@ -290,12 +287,13 @@ function testIllegalResumeThrowsDOMError() {
 }
 
 // Tests that MediaRecorder sends data blobs when resume() is called.
-function testResumeAndDataAvailable() {
+function testResumeAndDataAvailable(codec) {
   var videoSize = 0;
   var emptyBlobs = 0;
+  const mimeType = codec ? "video/webm;codecs=" + String(codec) : "";
   navigator.mediaDevices.getUserMedia(DEFAULT_CONSTRAINTS)
       .then(function(stream) {
-        return createAndStartMediaRecorder(stream, DEFAULT_RECORDER_MIME_TYPE);
+        return createAndStartMediaRecorder(stream, mimeType);
       })
       .then(function(recorder) {
         recorder.pause();