Convert video-buffer* http tests to testharness.js

third_party/WebKit/LayoutTests/TestExpectations

Index: third_party/WebKit/LayoutTests/TestExpectations
diff --git a/third_party/WebKit/LayoutTests/TestExpectations b/third_party/WebKit/LayoutTests/TestExpectations
index 6745e1652453f6822ec65734c4995c895924b57c..34652d5d27fd208eab1efa6c898e8d8ff3073676 100644
--- a/third_party/WebKit/LayoutTests/TestExpectations
+++ b/third_party/WebKit/LayoutTests/TestExpectations
@@ -1289,7 +1289,6 @@ crbug.com/624019 [ Mac ] bluetooth/notifications/stop-without-starting.html [ Sk
 crbug.com/487344 compositing/video/video-controls-layer-creation.html [ Failure ]
 crbug.com/487344 fast/hidpi/video-controls-in-hidpi.html [ Failure ]
 crbug.com/487344 fast/layers/video-layer.html [ Failure ]
-crbug.com/487344 http/tests/media/video-buffered-range-contains-currentTime.html [ Failure ]
 crbug.com/487344 media/audio-controls-rendering.html [ Failure ]
 crbug.com/487344 media/audio-repaint.html [ Failure ]
 crbug.com/487344 media/controls-after-reload.html [ Failure ]
@@ -1330,6 +1329,8 @@ crbug.com/621892 css3/filters/effect-hue-rotate-hw.html [ Pass Failure ]
 crbug.com/621892 css3/filters/effect-saturate-hw.html [ Pass Failure ]
 crbug.com/621892 css3/filters/effect-sepia-hw.html [ Pass Failure ]
 
+crbug.com/588956 http/tests/media/video-buffered-range-contains-currentTime.html  [ NeedsRebaseline ]
+
 crbug.com/622672 [ Mac ] virtual/threaded/fast/scroll-behavior/overflow-interrupted-scroll.html [ Pass Failure ]
 
 crbug.com/624430 [ Win10 ] fast/text/font-features/caps-casemapping.html [ Failure ]