Added missing track VTT file

fundamentals/media/chrome-subtitles-en.vtt

@@ -0,0 +1,34 @@
+WEBVTT
+
+NOTE
+This is just an example file to demonstrate adding a track.
+It is used as a captions track so is visible in the sample,
+but is really a description track.
+
+00:00.000 --> 00:04.000
+Man sitting on a tree branch, using a laptop.
+
+00:05.000 --> 00:08.000
+The branch breaks, and he starts to fall.
+
+00:09.000 --> 00:10.000
+Opens Chrome.
+
+00:11.000 --> 00:13.000
+Goes to shopping site and orders a hammock.
+
+00:16.000 --> 00:18.000
+Continues falling...
+
+00:19.000 --> 00:20.500
+He falls into the hammock, already delivered and set up!
+
+00:20.500 --> 00:22.000
+Delivery man smiles.
+
+00:22.500 --> 00:26.000
+Open a new browser. Chrome fast.
+
+00:26.500 --> 00:29.500
+Man using laptop in hammock.
+White butterfly flutters past, furry brown mole pops up.