Implement sequence<MediaStreamTrack> getTracks () This is to conform to the new spec- http://dev.w3…

LayoutTests/fast/mediastream/MediaStream-add-remove-tracks.html

Index: LayoutTests/fast/mediastream/MediaStream-add-remove-tracks.html
diff --git a/LayoutTests/fast/mediastream/MediaStream-add-remove-tracks.html b/LayoutTests/fast/mediastream/MediaStream-add-remove-tracks.html
index 214c97b091dce2f1738022ce1dc047ac65548f54..2ef08db836bd900ef0c33de0c48ae81fc95c9bc3 100644
--- a/LayoutTests/fast/mediastream/MediaStream-add-remove-tracks.html
+++ b/LayoutTests/fast/mediastream/MediaStream-add-remove-tracks.html
@@ -53,9 +53,11 @@ function gotStream2(s) {
 
     shouldBe('stream1.getAudioTracks().length', '1');
     shouldBe('stream1.getVideoTracks().length', '1');
+    shouldBe('stream1.getTracks().length', '2');
 
     shouldBe('stream2.getAudioTracks().length', '1');
     shouldBe('stream2.getVideoTracks().length', '1');
+    shouldBe('stream2.getTracks().length', '2');
 
     stream1.onaddtrack = shouldNotFire;
     stream1.onremovetrack = shouldNotFire;
@@ -67,6 +69,8 @@ function gotStream2(s) {
     tryRemoveTrack(stream1, audioTrack);
     // verify removed tracks
     shouldBe('stream1.getAudioTracks().length', '0');
+    // verify that gettracks length is reduced by 1
+    shouldBe('stream1.getTracks().length', '1');
     shouldBeNull('stream1.getTrackById(audioTrack.id)');
     // remove a non-existent (already removed) track (should not throw)
     tryRemoveTrack(stream1, audioTrack);
@@ -77,6 +81,8 @@ function gotStream2(s) {
 
     tryRemoveTrack(stream1, videoTrack);
     shouldBe('stream1.getVideoTracks().length', '0');
+    // verify that gettracks length is reduced by 1
+    shouldBe('stream1.getTracks().length', '1');
     shouldBeNull('stream1.getTrackById(videoTrack.id)');
     tryRemoveTrack(stream1, videoTrack);
     tryAddTrack(stream1, videoTrack);
@@ -84,6 +90,7 @@ function gotStream2(s) {
     // verify added tracks
     shouldBe('stream1.getAudioTracks().length', '1');
     shouldBe('stream1.getVideoTracks().length', '1');
+    shouldBe('stream1.getTracks().length', '2');
 
     // verify that kind and label is preserved
     shouldBe('stream1.getAudioTracks()[0].kind', 'audioTrack.kind');
@@ -98,6 +105,7 @@ function gotStream2(s) {
     // verify that nothing has changed
     shouldBe('stream1.getAudioTracks().length', '1');
     shouldBe('stream1.getVideoTracks().length', '1');
+    shouldBe('stream1.getTracks().length', '2');
 
     // add new tracks (from stream2)
     tryAddTrack(stream1, stream2.getAudioTracks()[0]);
@@ -106,6 +114,7 @@ function gotStream2(s) {
     // verify added tracks
     shouldBe('stream1.getAudioTracks().length', '2');
     shouldBe('stream1.getVideoTracks().length', '2');
+    shouldBe('stream1.getTracks().length', '4');
 
     // when all tracks have been removed, stream.ended should return true.
     tryRemoveTrack(stream2, stream2.getAudioTracks()[0]);