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

Source/core/css/BinaryDataFontFaceSource.h

Index: Source/core/css/BinaryDataFontFaceSource.h
diff --git a/Source/core/css/BinaryDataFontFaceSource.h b/Source/core/css/BinaryDataFontFaceSource.h
index 50d01f0ffc72f8cdd47aff4d58a806727ac37cea..2bc8565f94592e94b5ebb021f289fe8719fbb1bd 100644
--- a/Source/core/css/BinaryDataFontFaceSource.h
+++ b/Source/core/css/BinaryDataFontFaceSource.h
@@ -15,12 +15,12 @@ class SharedBuffer;
 
 class BinaryDataFontFaceSource final : public CSSFontFaceSource {
 public:
-    explicit BinaryDataFontFaceSource(SharedBuffer*, String&);
-    virtual ~BinaryDataFontFaceSource();
-    virtual bool isValid() const override;
+    BinaryDataFontFaceSource(SharedBuffer*, String&);
+    ~BinaryDataFontFaceSource() override;
+    bool isValid() const override;
 
 private:
-    virtual PassRefPtr<SimpleFontData> createFontData(const FontDescription&) override;
+    PassRefPtr<SimpleFontData> createFontData(const FontDescription&) override;
 
     OwnPtr<FontCustomPlatformData> m_customPlatformData;
 };