Remove, or rewrite if necessary, tests which use /deep/ or ::shadow

third_party/WebKit/LayoutTests/fast/dom/shadow/scrollbar.html

Index: third_party/WebKit/LayoutTests/fast/dom/shadow/scrollbar.html
diff --git a/third_party/WebKit/LayoutTests/fast/dom/shadow/scrollbar.html b/third_party/WebKit/LayoutTests/fast/dom/shadow/scrollbar.html
index eed5b10f69e00bd533773be69507199d2579e706..04b677e07bac80c4bb64c56b1f02743cc4ce65f1 100644
--- a/third_party/WebKit/LayoutTests/fast/dom/shadow/scrollbar.html
+++ b/third_party/WebKit/LayoutTests/fast/dom/shadow/scrollbar.html
@@ -12,24 +12,28 @@
    width: 50px;
 }
 
-* /deep/ #div1 {
-   position: fixed;
-   overflow: scroll;
-   width: 80px;
-   height: 80px;
-   background-color: red;
+</style>
+<style id="shadow-style">
+#div1 {
+  position: fixed;
+  overflow: scroll;
+  width: 80px;
+  height: 80px;
+  background-color: red;
 }
 
-* /deep/ #div1::-webkit-scrollbar {
-   width: 20px;
+#div1::-webkit-scrollbar {
+  width: 20px;
 }
 </style>
 
 <div id="host"></div>
 
+
 <script>
 var shadowRoot = host.createShadowRoot();
 shadowRoot.innerHTML = '<div id="div1">some long text showing scrollbar</div>';
+shadowRoot.appendChild(document.querySelector('#shadow-style'));
 </script>
 
 </body></html>