Include MSE duration testSetZero, nix early ending

LayoutTests/http/tests/media/media-source/webkitmediasource-duration-boundaryconditions-expected.txt

Index: LayoutTests/http/tests/media/media-source/webkitmediasource-duration-boundaryconditions-expected.txt
diff --git a/LayoutTests/http/tests/media/media-source/webkitmediasource-duration-boundaryconditions-expected.txt b/LayoutTests/http/tests/media/media-source/webkitmediasource-duration-boundaryconditions-expected.txt
index ecfaea6328ab1709258e7b82c07c96403eec5b4e..23af600596acaafc25d8ee09541982d124300be2 100644
--- a/LayoutTests/http/tests/media/media-source/webkitmediasource-duration-boundaryconditions-expected.txt
+++ b/LayoutTests/http/tests/media/media-source/webkitmediasource-duration-boundaryconditions-expected.txt
@@ -91,5 +91,22 @@ PASS: Media Source set duration. Got expected exception Error: InvalidAccessErro
 
 running testSetPositiveDouble
 EVENT(webkitsourceopen)
+onDurationChange : video.duration is 6.042
+EXPECTED (mediaSource.duration == 'video.duration') OK
+EVENT(loadedmetadata)
+EXPECTED (mediaSource.duration == 'testDurationValue') OK
+onDurationChange : video.duration is 101.900
+EXPECTED (mediaSource.duration == 'video.duration') OK
+EVENT(durationchange)
+
+running testSetZero
+EVENT(webkitsourceopen)
+onDurationChange : video.duration is 6.042
+EXPECTED (mediaSource.duration == 'video.duration') OK
+EVENT(loadedmetadata)
+EXPECTED (mediaSource.duration == 'testDurationValue') OK
+onDurationChange : video.duration is 0.000
+EXPECTED (mediaSource.duration == 'video.duration') OK
+EVENT(durationchange)
 END OF TEST