Reland 2617183002 without offending tests

third_party/WebKit/LayoutTests/vr/getVRDisplays_zero_display.html

Index: third_party/WebKit/LayoutTests/vr/getVRDisplays_zero_display.html
diff --git a/third_party/WebKit/LayoutTests/vr/getVRDisplays_zero_display.html b/third_party/WebKit/LayoutTests/vr/getVRDisplays_zero_display.html
index 41bcafbe8cba4e5d835fa32bef116e17e5fda325..9b95cff27f93b1637241e67cea6ea897c3866e81 100644
--- a/third_party/WebKit/LayoutTests/vr/getVRDisplays_zero_display.html
+++ b/third_party/WebKit/LayoutTests/vr/getVRDisplays_zero_display.html
@@ -5,11 +5,20 @@
 <script src="resources/mock-vr-service.js"></script>
 <script>
 
-vr_test((service) => {
-  return  navigator.getVRDisplays().then(devices => {
-      assert_true(devices != null);
-      assert_equals(0, devices.length);
+vr_test( (t) => {
+  return  navigator.getVRDisplays().then( (displays) => {
+    t.step( () => {
+      assert_true(displays != null);
+      assert_equals(displays.length, 0);
+    }, "getVRDisplays returned correct results");
+  }, (err) => {
+    t.step( () => {
+      assert_unreached("getVRDisplays rejected");
     });
-}, [], 'test no VRDisplay');
+  }).then( () => {
+    t.done();
+  });
+}, [],
+"WebVR properly returns zero displays");
 
 </script>