diff --git a/tests/ref/basic.list b/tests/ref/basic.list
index c363d8f96f6..7e8551c33e3 100644
--- a/tests/ref/basic.list
+++ b/tests/ref/basic.list
@@ -11,10 +11,6 @@ fragment=top != ../html/acid2.html acid2_ref.html
 
 == acid2_noscroll.html acid2_ref_broken.html
 flaky_cpu == append_style_a.html append_style_b.html
-== box_shadow_inset_a.html box_shadow_inset_ref.html
-== box_shadow_inset_parsing_a.html box_shadow_inset_parsing_ref.html
-== box_shadow_spread_a.html box_shadow_spread_ref.html
-== canvas_radial_gradient_a.html canvas_radial_gradient_ref.html
 == fixed_width_overrides_child_intrinsic_width_a.html fixed_width_overrides_child_intrinsic_width_ref.html
 prefs:"layout.flex-direction.enabled,layout.flex.enabled" == flex_column_direction.html flex_column_direction_ref.html
 prefs:"layout.flex.enabled" == flex_row_direction.html flex_row_direction_ref.html
diff --git a/tests/wpt/mozilla/meta/MANIFEST.json b/tests/wpt/mozilla/meta/MANIFEST.json
index 39fc9811d6a..77b23ba35f5 100644
--- a/tests/wpt/mozilla/meta/MANIFEST.json
+++ b/tests/wpt/mozilla/meta/MANIFEST.json
@@ -899,6 +899,18 @@
             "url": "/_mozilla/css/box_shadow_default_color_a.html"
           }
         ],
+        "css/box_shadow_inset_a.html": [
+          {
+            "path": "css/box_shadow_inset_a.html",
+            "references": [
+              [
+                "/_mozilla/css/box_shadow_inset_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/box_shadow_inset_a.html"
+          }
+        ],
         "css/box_shadow_inset_bg.html": [
           {
             "path": "css/box_shadow_inset_bg.html",
@@ -911,6 +923,18 @@
             "url": "/_mozilla/css/box_shadow_inset_bg.html"
           }
         ],
+        "css/box_shadow_inset_parsing_a.html": [
+          {
+            "path": "css/box_shadow_inset_parsing_a.html",
+            "references": [
+              [
+                "/_mozilla/css/box_shadow_inset_parsing_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/box_shadow_inset_parsing_a.html"
+          }
+        ],
         "css/box_shadow_paint_order_a.html": [
           {
             "path": "css/box_shadow_paint_order_a.html",
@@ -923,6 +947,18 @@
             "url": "/_mozilla/css/box_shadow_paint_order_a.html"
           }
         ],
+        "css/box_shadow_spread_a.html": [
+          {
+            "path": "css/box_shadow_spread_a.html",
+            "references": [
+              [
+                "/_mozilla/css/box_shadow_spread_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/box_shadow_spread_a.html"
+          }
+        ],
         "css/box_sizing_border_box_a.html": [
           {
             "path": "css/box_sizing_border_box_a.html",
@@ -1019,6 +1055,18 @@
             "url": "/_mozilla/css/canvas_over_area.html"
           }
         ],
+        "css/canvas_radial_gradient_a.html": [
+          {
+            "path": "css/canvas_radial_gradient_a.html",
+            "references": [
+              [
+                "/_mozilla/css/canvas_radial_gradient_ref.html",
+                "=="
+              ]
+            ],
+            "url": "/_mozilla/css/canvas_radial_gradient_a.html"
+          }
+        ],
         "css/case-insensitive-font-family.html": [
           {
             "path": "css/case-insensitive-font-family.html",
@@ -5640,6 +5688,18 @@
           "url": "/_mozilla/css/box_shadow_default_color_a.html"
         }
       ],
+      "css/box_shadow_inset_a.html": [
+        {
+          "path": "css/box_shadow_inset_a.html",
+          "references": [
+            [
+              "/_mozilla/css/box_shadow_inset_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/box_shadow_inset_a.html"
+        }
+      ],
       "css/box_shadow_inset_bg.html": [
         {
           "path": "css/box_shadow_inset_bg.html",
@@ -5652,6 +5712,18 @@
           "url": "/_mozilla/css/box_shadow_inset_bg.html"
         }
       ],
+      "css/box_shadow_inset_parsing_a.html": [
+        {
+          "path": "css/box_shadow_inset_parsing_a.html",
+          "references": [
+            [
+              "/_mozilla/css/box_shadow_inset_parsing_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/box_shadow_inset_parsing_a.html"
+        }
+      ],
       "css/box_shadow_paint_order_a.html": [
         {
           "path": "css/box_shadow_paint_order_a.html",
@@ -5664,6 +5736,18 @@
           "url": "/_mozilla/css/box_shadow_paint_order_a.html"
         }
       ],
+      "css/box_shadow_spread_a.html": [
+        {
+          "path": "css/box_shadow_spread_a.html",
+          "references": [
+            [
+              "/_mozilla/css/box_shadow_spread_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/box_shadow_spread_a.html"
+        }
+      ],
       "css/box_sizing_border_box_a.html": [
         {
           "path": "css/box_sizing_border_box_a.html",
@@ -5760,6 +5844,18 @@
           "url": "/_mozilla/css/canvas_over_area.html"
         }
       ],
+      "css/canvas_radial_gradient_a.html": [
+        {
+          "path": "css/canvas_radial_gradient_a.html",
+          "references": [
+            [
+              "/_mozilla/css/canvas_radial_gradient_ref.html",
+              "=="
+            ]
+          ],
+          "url": "/_mozilla/css/canvas_radial_gradient_a.html"
+        }
+      ],
       "css/case-insensitive-font-family.html": [
         {
           "path": "css/case-insensitive-font-family.html",
diff --git a/tests/ref/box_shadow_inset_a.html b/tests/wpt/mozilla/tests/css/box_shadow_inset_a.html
similarity index 85%
rename from tests/ref/box_shadow_inset_a.html
rename to tests/wpt/mozilla/tests/css/box_shadow_inset_a.html
index c6076a6c730..ba4b5b19f92 100644
--- a/tests/ref/box_shadow_inset_a.html
+++ b/tests/wpt/mozilla/tests/css/box_shadow_inset_a.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <head>
 <!-- Tests that box-shadow inset works. -->
+<link rel=match href=box_shadow_inset_ref.html>
 <style>
 section {
     position: absolute;
diff --git a/tests/ref/box_shadow_inset_parsing_a.html b/tests/wpt/mozilla/tests/css/box_shadow_inset_parsing_a.html
similarity index 85%
rename from tests/ref/box_shadow_inset_parsing_a.html
rename to tests/wpt/mozilla/tests/css/box_shadow_inset_parsing_a.html
index eb21c825107..741f697f1c8 100644
--- a/tests/ref/box_shadow_inset_parsing_a.html
+++ b/tests/wpt/mozilla/tests/css/box_shadow_inset_parsing_a.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <head>
 <!-- Tests that box-shadow inset parsing quirks work properly. -->
+<link rel=match href=box_shadow_inset_parsing_ref.html>
 <style>
 section {
     position: absolute;
diff --git a/tests/ref/box_shadow_inset_parsing_ref.html b/tests/wpt/mozilla/tests/css/box_shadow_inset_parsing_ref.html
similarity index 100%
rename from tests/ref/box_shadow_inset_parsing_ref.html
rename to tests/wpt/mozilla/tests/css/box_shadow_inset_parsing_ref.html
diff --git a/tests/ref/box_shadow_inset_ref.html b/tests/wpt/mozilla/tests/css/box_shadow_inset_ref.html
similarity index 100%
rename from tests/ref/box_shadow_inset_ref.html
rename to tests/wpt/mozilla/tests/css/box_shadow_inset_ref.html
diff --git a/tests/ref/box_shadow_spread_a.html b/tests/wpt/mozilla/tests/css/box_shadow_spread_a.html
similarity index 82%
rename from tests/ref/box_shadow_spread_a.html
rename to tests/wpt/mozilla/tests/css/box_shadow_spread_a.html
index 6e1e45a2738..8f593aefae5 100644
--- a/tests/ref/box_shadow_spread_a.html
+++ b/tests/wpt/mozilla/tests/css/box_shadow_spread_a.html
@@ -1,5 +1,6 @@
 <head>
 <!-- Tests that spread works. -->
+<link rel=match href=box_shadow_spread_ref.html>
 <style>
 section {
     position: absolute;
diff --git a/tests/ref/box_shadow_spread_ref.html b/tests/wpt/mozilla/tests/css/box_shadow_spread_ref.html
similarity index 100%
rename from tests/ref/box_shadow_spread_ref.html
rename to tests/wpt/mozilla/tests/css/box_shadow_spread_ref.html
diff --git a/tests/ref/canvas_radial_gradient.png b/tests/wpt/mozilla/tests/css/canvas_radial_gradient.png
similarity index 100%
rename from tests/ref/canvas_radial_gradient.png
rename to tests/wpt/mozilla/tests/css/canvas_radial_gradient.png
diff --git a/tests/ref/canvas_radial_gradient_a.html b/tests/wpt/mozilla/tests/css/canvas_radial_gradient_a.html
similarity index 90%
rename from tests/ref/canvas_radial_gradient_a.html
rename to tests/wpt/mozilla/tests/css/canvas_radial_gradient_a.html
index 7fe5f8e4186..1d956a5f7bd 100644
--- a/tests/ref/canvas_radial_gradient_a.html
+++ b/tests/wpt/mozilla/tests/css/canvas_radial_gradient_a.html
@@ -1,6 +1,7 @@
 <!DOCTYPE html>
 <html>
 <body>
+<link rel=match href=canvas_radial_gradient_ref.html>
 <style>
   html, body {
     margin: 0;
diff --git a/tests/ref/canvas_radial_gradient_ref.html b/tests/wpt/mozilla/tests/css/canvas_radial_gradient_ref.html
similarity index 100%
rename from tests/ref/canvas_radial_gradient_ref.html
rename to tests/wpt/mozilla/tests/css/canvas_radial_gradient_ref.html