Media Capture Depth Stream Extensions API: videoKind settings and constraint.

content/test/data/media/depth_stream_test_utilities.js

Index: content/test/data/media/depth_stream_test_utilities.js
diff --git a/content/test/data/media/depth_stream_test_utilities.js b/content/test/data/media/depth_stream_test_utilities.js
index 0aa763e90882d24b512c42812a71123748c7775b..4350c30d068fc78aedb6dabe6cad386922c0a849 100644
--- a/content/test/data/media/depth_stream_test_utilities.js
+++ b/content/test/data/media/depth_stream_test_utilities.js
@@ -32,6 +32,15 @@ function getFake16bitStream() {
   });
 }
 
+function getStreamOfVideoKind(constraint_kind) {
+  var constraints = {
+    video:{
+      videoKind: constraint_kind
+    }
+  }
+  return navigator.mediaDevices.getUserMedia(constraints);
+}
+
 // Data is RGBA array data and could be used with different formats:
 // e.g. Uint8Array, Uint8ClampedArray, Float32Array...
 // Value at point (row, column) is calculated as