Fix broken AttachContext from r152289

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index 1abbe217fa7faab9a96ffeaa40b954a59a674713..488316528d739493353da81a3bab497e558125da 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -1280,7 +1280,7 @@ void Element::attach(const AttachContext& context)
     // When a shadow root exists, it does the work of attaching the children.
     if (ElementShadow* shadow = this->shadow()) {
         parentPusher.push();
-        shadow->attach();
+        shadow->attach(context);
     } else if (firstChild())
         parentPusher.push();
 
@@ -1319,8 +1319,8 @@ void Element::detach(const AttachContext& context)
     }
 
     if (ElementShadow* shadow = this->shadow()) {
-        detachChildrenIfNeeded();
-        shadow->detach();
+        detachChildrenIfNeeded(context);
+        shadow->detach(context);
     }
     ContainerNode::detach(context);
 }