Fix virtual/override/final usage in Source/core/dom/.

Source/core/dom/shadow/InsertionPoint.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 #include "core/CoreExport.h"
 #include "core/css/CSSSelectorList.h"
 #include "core/dom/shadow/DistributedNodes.h"
 #include "core/dom/shadow/ShadowRoot.h"
 #include "core/html/HTMLElement.h"
 
 namespace blink {
 
 class CORE_EXPORT InsertionPoint : public HTMLElement {
 public:
-    virtual ~InsertionPoint();
+    ~InsertionPoint() override;
 
     bool hasDistribution() const { return !m_distributedNodes.isEmpty(); }
     void setDistributedNodes(DistributedNodes&);
     void clearDistribution() { m_distributedNodes.clear(); }
     bool isActive() const;
     bool canBeActive() const;
 
     bool isShadowInsertionPoint() const;
     bool isContentInsertionPoint() const;
 
     PassRefPtrWillBeRawPtr<StaticNodeList> getDistributedNodes();
 
     virtual bool canAffectSelector() const { return false; }
 
-    virtual void attach(const AttachContext& = AttachContext()) override;
-    virtual void detach(const AttachContext& = AttachContext()) override;
+    void attach(const AttachContext& = AttachContext()) override;
+    void detach(const AttachContext& = AttachContext()) override;
 
     bool shouldUseFallbackElements() const;
 
     size_t distributedNodesSize() const { return m_distributedNodes.size(); }
     Node* distributedNodeAt(size_t index)  const { return m_distributedNodes.at(index).get(); }
     Node* firstDistributedNode() const { return m_distributedNodes.isEmpty() ? 0 : m_distributedNodes.first().get(); }
     Node* lastDistributedNode() const { return m_distributedNodes.isEmpty() ? 0 : m_distributedNodes.last().get(); }
     Node* distributedNodeNextTo(const Node* node) const { return m_distributedNodes.nextTo(node); }
     Node* distributedNodePreviousTo(const Node* node) const { return m_distributedNodes.previousTo(node); }
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
     InsertionPoint(const QualifiedName&, Document&);
-    virtual bool layoutObjectIsNeeded(const ComputedStyle&) override;
-    virtual void childrenChanged(const ChildrenChange&) override;
-    virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
-    virtual void removedFrom(ContainerNode*) override;
-    virtual void willRecalcStyle(StyleRecalcChange) override;
+    bool layoutObjectIsNeeded(const ComputedStyle&) override;
+    void childrenChanged(const ChildrenChange&) override;
+    InsertionNotificationRequest insertedInto(ContainerNode*) override;
+    void removedFrom(ContainerNode*) override;
+    void willRecalcStyle(StyleRecalcChange) override;
 
 private:
     bool isInsertionPoint() const = delete; // This will catch anyone doing an unnecessary check.
 
     DistributedNodes m_distributedNodes;
     bool m_registeredWithShadowRoot;
 };
 
 typedef WillBeHeapVector<RefPtrWillBeMember<InsertionPoint>, 1> DestinationInsertionPoints;
 
@@ skipping 23 matching lines @@
     return 0;
 }
 
 const InsertionPoint* resolveReprojection(const Node*);
 
 void collectDestinationInsertionPoints(const Node&, WillBeHeapVector<RawPtrWillBeMember<InsertionPoint>, 8>& results);
 
 } // namespace blink
 
 #endif // InsertionPoint_h