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

Source/core/css/MediaValuesCached.h

Index: Source/core/css/MediaValuesCached.h
diff --git a/Source/core/css/MediaValuesCached.h b/Source/core/css/MediaValuesCached.h
index 4d4ba8003921e3cfed4a0fe936820d837d0bdedf..55b8e5ac528b99ac9f00d8be835f482e708b49fd 100644
--- a/Source/core/css/MediaValuesCached.h
+++ b/Source/core/css/MediaValuesCached.h
@@ -55,33 +55,33 @@ public:
     static PassRefPtr<MediaValues> create(Document&);
     static PassRefPtr<MediaValues> create(LocalFrame*);
     static PassRefPtr<MediaValues> create(MediaValuesCachedData&);
-    virtual PassRefPtr<MediaValues> copy() const override;
-    virtual bool isSafeToSendToAnotherThread() const override;
-    virtual bool computeLength(double value, CSSPrimitiveValue::UnitType, int& result) const override;
-    virtual bool computeLength(double value, CSSPrimitiveValue::UnitType, double& result) const override;
+    PassRefPtr<MediaValues> copy() const override;
+    bool isSafeToSendToAnotherThread() const override;
+    bool computeLength(double value, CSSPrimitiveValue::UnitType, int& result) const override;
+    bool computeLength(double value, CSSPrimitiveValue::UnitType, double& result) const override;
 
-    virtual int viewportWidth() const override;
-    virtual int viewportHeight() const override;
-    virtual int deviceWidth() const override;
-    virtual int deviceHeight() const override;
-    virtual float devicePixelRatio() const override;
-    virtual int colorBitsPerComponent() const override;
-    virtual int monochromeBitsPerComponent() const override;
-    virtual PointerType primaryPointerType() const override;
-    virtual int availablePointerTypes() const override;
-    virtual HoverType primaryHoverType() const override;
-    virtual int availableHoverTypes() const override;
-    virtual bool threeDEnabled() const override;
-    virtual bool strictMode() const override;
-    virtual Document* document() const override;
-    virtual bool hasValues() const override;
-    virtual const String mediaType() const override;
-    virtual WebDisplayMode displayMode() const override;
+    int viewportWidth() const override;
+    int viewportHeight() const override;
+    int deviceWidth() const override;
+    int deviceHeight() const override;
+    float devicePixelRatio() const override;
+    int colorBitsPerComponent() const override;
+    int monochromeBitsPerComponent() const override;
+    PointerType primaryPointerType() const override;
+    int availablePointerTypes() const override;
+    HoverType primaryHoverType() const override;
+    int availableHoverTypes() const override;
+    bool threeDEnabled() const override;
+    bool strictMode() const override;
+    Document* document() const override;
+    bool hasValues() const override;
+    const String mediaType() const override;
+    WebDisplayMode displayMode() const override;
 
     void setViewportWidth(int);
     void setViewportHeight(int);
 
-    virtual bool isCached() const override { return true; }
+    bool isCached() const override { return true; }
 protected:
     MediaValuesCached();
     MediaValuesCached(LocalFrame*);