Fix virtual/override/final usage in Source/core/{animation,css,style}/.

Source/core/css/CSSStyleSheet.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 35 matching lines @@
 };
 
 class CORE_EXPORT CSSStyleSheet final : public StyleSheet {
     DEFINE_WRAPPERTYPEINFO();
 public:
     static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule = 0);
     static PassRefPtrWillBeRawPtr<CSSStyleSheet> create(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode);
     static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(Node*, const KURL&, const TextPosition& startPosition = TextPosition::minimumPosition(), const String& encoding = String());
     static PassRefPtrWillBeRawPtr<CSSStyleSheet> createInline(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, const TextPosition& startPosition = TextPosition::minimumPosition());
 
-    virtual ~CSSStyleSheet();
+    ~CSSStyleSheet() override;
 
-    virtual CSSStyleSheet* parentStyleSheet() const override;
-    virtual Node* ownerNode() const override { return m_ownerNode; }
-    virtual MediaList* media() const override;
-    virtual String href() const override;
-    virtual String title() const override { return m_title; }
-    virtual bool disabled() const override { return m_isDisabled; }
-    virtual void setDisabled(bool) override;
+    CSSStyleSheet* parentStyleSheet() const override;
+    Node* ownerNode() const override { return m_ownerNode; }
+    MediaList* media() const override;
+    String href() const override;
+    String title() const override { return m_title; }
+    bool disabled() const override { return m_isDisabled; }
+    void setDisabled(bool) override;
 
     PassRefPtrWillBeRawPtr<CSSRuleList> cssRules();
     unsigned insertRule(const String& rule, unsigned index, ExceptionState&);
     unsigned insertRule(const String& rule, ExceptionState&); // Deprecated.
     void deleteRule(unsigned index, ExceptionState&);
 
     // IE Extensions
     PassRefPtrWillBeRawPtr<CSSRuleList> rules();
     int addRule(const String& selector, const String& style, int index, ExceptionState&);
     int addRule(const String& selector, const String& style, ExceptionState&);
     void removeRule(unsigned index, ExceptionState& exceptionState) { deleteRule(index, exceptionState); }
 
     // For CSSRuleList.
     unsigned length() const;
     CSSRule* item(unsigned index);
 
-    virtual void clearOwnerNode() override;
+    void clearOwnerNode() override;
 
-    virtual CSSRule* ownerRule() const override { return m_ownerRule; }
-    virtual KURL baseURL() const override;
-    virtual bool isLoading() const override;
+    CSSRule* ownerRule() const override { return m_ownerRule; }
+    KURL baseURL() const override;
+    bool isLoading() const override;
 
     void clearOwnerRule() { m_ownerRule = nullptr; }
     Document* ownerDocument() const;
     MediaQuerySet* mediaQueries() const { return m_mediaQueries.get(); }
     void setMediaQueries(PassRefPtrWillBeRawPtr<MediaQuerySet>);
     void setTitle(const String& title) { m_title = title; }
     // Set by LinkStyle iff CORS-enabled fetch of stylesheet succeeded from this origin.
     void setAllowRuleAccessFromOrigin(PassRefPtr<SecurityOrigin> allowedOrigin);
 
     class RuleMutationScope {
@@ skipping 22 matching lines @@
     bool sheetLoaded();
     bool loadCompleted() const { return m_loadCompleted; }
     void startLoadingDynamicSheet();
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, CSSImportRule* ownerRule);
     CSSStyleSheet(PassRefPtrWillBeRawPtr<StyleSheetContents>, Node* ownerNode, bool isInlineStylesheet, const TextPosition& startPosition);
 
-    virtual bool isCSSStyleSheet() const override { return true; }
-    virtual String type() const override { return "text/css"; }
+    bool isCSSStyleSheet() const override { return true; }
+    String type() const override { return "text/css"; }
 
     void reattachChildRuleCSSOMWrappers();
 
     bool canAccessRules() const;
 
     void setLoadCompleted(bool);
 
     RefPtrWillBeMember<StyleSheetContents> m_contents;
     bool m_isInlineStylesheet;
     bool m_isDisabled;
@@ skipping 30 matching lines @@
 {
     if (m_styleSheet)
         m_styleSheet->didMutateRules();
 }
 
 DEFINE_TYPE_CASTS(CSSStyleSheet, StyleSheet, sheet, sheet->isCSSStyleSheet(), sheet.isCSSStyleSheet());
 
 } // namespace blink
 
 #endif