Skip shadow hosts with negative tabindex in focus navigation

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

 // TODO(yuzus): These two functions below need cleaning up. They are currently
 // from js-test.js.
 function getOrCreateTestElement(id, tagName)
 {
     var element = document.getElementById(id);
     if (element)
         return element;
 
     element = document.createElement(tagName);
     element.id = id;
@@ skipping 172 matching lines @@
             shadowRoot = window.internals.youngerShadowRoot(shadowRoot);
         }
     }
     return element;
 }
 
 function isInnermostActiveElement(id)
 {
     var element = getNodeInComposedTree(id);
     if (!element) {
-        debug('FAIL: There is no such element with id: '+ from);
+        debug('FAIL: There is no such element with id: '+ id);
         return false;
     }
     if (element == innermostActiveElement())
         return true;
     debug('Expected innermost activeElement is ' + id + ', but actual innermost activeElement is ' + dumpNode(innermostActiveElement()));
     return false;
 }
 
 function shouldNavigateFocus(from, to, direction)
 {
@@ skipping 144 matching lines @@
                 return node;
         }
 
         return null;
     };
 
     if (!window.internals)
         return null;
     return iter(root, id);
 }