Remove HTMLShadowElement.

sky/engine/core/page/FocusController.h

Index: sky/engine/core/page/FocusController.h
diff --git a/sky/engine/core/page/FocusController.h b/sky/engine/core/page/FocusController.h
index 83041fab2864eba847068da3e61833e016467b79..31cde3e3f89d4423b7500d6fd21da49d27ba008c 100644
--- a/sky/engine/core/page/FocusController.h
+++ b/sky/engine/core/page/FocusController.h
@@ -39,7 +39,6 @@ struct FocusCandidate;
 class Document;
 class Element;
 class LocalFrame;
-class HTMLShadowElement;
 class IntRect;
 class KeyboardEvent;
 class Node;
@@ -54,7 +53,6 @@ public:
     static FocusNavigationScope focusNavigationScopeOf(Node*);
     static FocusNavigationScope ownedByNonFocusableFocusScopeOwner(Node*);
     static FocusNavigationScope ownedByShadowHost(Node*);
-    static FocusNavigationScope ownedByShadowInsertionPoint(HTMLShadowElement*);
 
 private:
     explicit FocusNavigationScope(TreeScope*);