Revert of Remove scoped styles.

LayoutTests/fast/css/style-scoped/style-scoped-shadow-crash.html

Index: LayoutTests/fast/css/style-scoped/style-scoped-shadow-crash.html
diff --git a/LayoutTests/fast/css/style-scoped/style-scoped-shadow-crash.html b/LayoutTests/fast/css/style-scoped/style-scoped-shadow-crash.html
new file mode 100644
index 0000000000000000000000000000000000000000..fd74b8e1f4caf640664d8b119f065067040407ec
--- /dev/null
+++ b/LayoutTests/fast/css/style-scoped/style-scoped-shadow-crash.html
@@ -0,0 +1,28 @@
+<div id=div1>
+  <style scoped></style>
+</div>
+<div id=div2></div>
+
+<script>
+if (window.testRunner) {
+    testRunner.dumpAsText();
+    testRunner.waitUntilDone();
+}
+
+(function() { 
+   var div1 = document.getElementById("div1");
+   div2Shadow = div2.createShadowRoot();
+   div2Shadow.appendChild(div1);
+   div1.parentNode.removeChild(div1);
+})();
+
+gc();
+
+setTimeout(function() {
+    document.body.appendChild(document.createElementNS("http://www.w3.org/2000/svg", "font-face"));
+    console.log("PASS unless crash");
+    window.testRunner.notifyDone();
+}, 0);
+
+</script>
+