Add layout tests for the audio component of MediaStream Recording.

third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData-audio.html

Index: third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData-audio.html
diff --git a/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData.html b/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData-audio.html
similarity index 81%
copy from third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData.html
copy to third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData-audio.html
index 99395e91efa0b6372e76a81e00250a66c3b742a0..88d252e125b898eae3d55840d39429ef4bf76758 100644
--- a/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData.html
+++ b/third_party/WebKit/LayoutTests/fast/mediarecorder/MediaRecorder-requestData-audio.html
@@ -3,7 +3,7 @@
 <script src=../../resources/testharnessreport.js></script>
 <script>
 
-var test = async_test('checks requestData() for video-only MediaRecorder API.');
+var test = async_test('checks requestData() for audio-only MediaRecorder API.');
 var recorder;
 
 recorderOnDataAvailable = test.step_func(function(event) {
@@ -20,9 +20,9 @@ recorderOnError = test.step_func(function() {
 });
 
 gotStream = test.step_func(function(stream) {
-    assert_equals(stream.getAudioTracks().length, 0);
-    assert_equals(stream.getVideoTracks().length, 1);
-    assert_equals(stream.getVideoTracks()[0].readyState, 'live');
+    assert_equals(stream.getVideoTracks().length, 0);
+    assert_equals(stream.getAudioTracks().length, 1);
+    assert_equals(stream.getAudioTracks()[0].readyState, 'live');
 
     try {
         recorder = new MediaRecorder(stream);
@@ -52,7 +52,7 @@ onError = test.step_func(function() {
 });
 
 try {
-    navigator.webkitGetUserMedia({video:true}, gotStream, onError);
+    navigator.webkitGetUserMedia({audio:true}, gotStream, onError);
 } catch(e) {
     assert_unreached('Exception launching getUserMedia(): ' + e);
 }