Fix focus navigation for nested slot case

third_party/WebKit/LayoutTests/shadow-dom/resources/shadow-dom.js

Index: third_party/WebKit/LayoutTests/shadow-dom/resources/shadow-dom.js
diff --git a/third_party/WebKit/LayoutTests/shadow-dom/resources/shadow-dom.js b/third_party/WebKit/LayoutTests/shadow-dom/resources/shadow-dom.js
index f9125bc7f293a976ca38dc2c3cf2ae9992efc97e..9536b612a4ee66708a9c0ed2cb1aeb08e770b5a2 100644
--- a/third_party/WebKit/LayoutTests/shadow-dom/resources/shadow-dom.js
+++ b/third_party/WebKit/LayoutTests/shadow-dom/resources/shadow-dom.js
@@ -19,13 +19,15 @@ function convertTemplatesToShadowRootsWithin(node) {
     for (var i = 0; i < nodes.length; ++i) {
         var template = nodes[i];
         var mode = template.getAttribute("data-mode");
+        var delegatesFocus = template.hasAttribute("data-delegatesFocus");
         var parent = template.parentNode;
         parent.removeChild(template);
         var shadowRoot;
         if (!mode || mode == 'v0'){
             shadowRoot = parent.createShadowRoot();
         } else {
-            shadowRoot = parent.attachShadow({'mode': mode});
+            shadowRoot = parent.attachShadow({'mode': mode,
+                                              'delegatesFocus': delegatesFocus});
         }
         var expose = template.getAttribute("data-expose-as");
         if (expose)