Map tests for 3D transforms (#45356)

diff --git a/css/css-transforms/WEB_FEATURES.yml b/css/css-transforms/WEB_FEATURES.yml
new file mode 100644
index 0000000..ca13ab5
--- /dev/null
+++ b/css/css-transforms/WEB_FEATURES.yml
@@ -0,0 +1,6 @@
+features:
+- name: transforms3d
+  files:
+  - "*3d*"
+  - backface-visibility-*
+  - perspective-*
diff --git a/css/css-transforms/animation/WEB_FEATURES.yml b/css/css-transforms/animation/WEB_FEATURES.yml
new file mode 100644
index 0000000..831086f
--- /dev/null
+++ b/css/css-transforms/animation/WEB_FEATURES.yml
@@ -0,0 +1,5 @@
+features:
+- name: transforms3d
+  files:
+  - backface-visibility-*
+  - perspective-*
diff --git a/css/css-transforms/parsing/WEB_FEATURES.yml b/css/css-transforms/parsing/WEB_FEATURES.yml
new file mode 100644
index 0000000..831086f
--- /dev/null
+++ b/css/css-transforms/parsing/WEB_FEATURES.yml
@@ -0,0 +1,5 @@
+features:
+- name: transforms3d
+  files:
+  - backface-visibility-*
+  - perspective-*