New media playback UI.

LayoutTests/media/track/track-cue-rendering-wider-than-controls.html

Index: LayoutTests/media/track/track-cue-rendering-wider-than-controls.html
diff --git a/LayoutTests/media/track/track-cue-rendering-wider-than-controls.html b/LayoutTests/media/track/track-cue-rendering-wider-than-controls.html
index 1f7ec2927c6a4577d03e8cd5a8ec7fc78df9b60a..9e3d7ea94381d8037be5b044b55b9e6678b914ea 100644
--- a/LayoutTests/media/track/track-cue-rendering-wider-than-controls.html
+++ b/LayoutTests/media/track/track-cue-rendering-wider-than-controls.html
@@ -2,6 +2,14 @@
 <script src=../media-file.js></script>
 <script src=../video-test.js></script>
 <script src=../media-controls.js></script>
+<style>
+/* enforce a max width on the controls enclosure, so
+ * that it doesn't fill the entire player width.
+ */
+video::-webkit-media-controls-enclosure {
+    max-width: 800;
+}
+</style>
 <script>
 var controlsContainer;
 var cueRoot;