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

Source/core/layout/LayoutThemeAndroid.h

Index: Source/core/layout/LayoutThemeAndroid.h
diff --git a/Source/core/layout/LayoutThemeAndroid.h b/Source/core/layout/LayoutThemeAndroid.h
index f54e9c2e2973da849f3be12022d92e83910e6c38..f088c037aba156d3bc4bb571328567176a1bdecc 100644
--- a/Source/core/layout/LayoutThemeAndroid.h
+++ b/Source/core/layout/LayoutThemeAndroid.h
@@ -33,29 +33,29 @@ namespace blink {
 class LayoutThemeAndroid final : public LayoutThemeDefault {
 public:
     static PassRefPtr<LayoutTheme> create();
-    virtual String extraDefaultStyleSheet() override;
+    String extraDefaultStyleSheet() override;
 
-    virtual void adjustInnerSpinButtonStyle(ComputedStyle&, Element*) const override;
+    void adjustInnerSpinButtonStyle(ComputedStyle&, Element*) const override;
 
-    virtual bool delegatesMenuListRendering() const override { return true; }
+    bool delegatesMenuListRendering() const override { return true; }
 
-    virtual String extraMediaControlsStyleSheet() override;
+    String extraMediaControlsStyleSheet() override;
 
-    virtual Color platformTapHighlightColor() const override
+    Color platformTapHighlightColor() const override
     {
         return LayoutThemeAndroid::defaultTapHighlightColor;
     }
 
-    virtual Color platformActiveSelectionBackgroundColor() const override
+    Color platformActiveSelectionBackgroundColor() const override
     {
         return LayoutThemeAndroid::defaultActiveSelectionBackgroundColor;
     }
 
 protected:
-    virtual int menuListArrowPadding() const override;
+    int menuListArrowPadding() const override;
 
 private:
-    virtual ~LayoutThemeAndroid();
+    ~LayoutThemeAndroid() override;
 
     static const RGBA32 defaultTapHighlightColor = 0x6633b5e5;
     static const RGBA32 defaultActiveSelectionBackgroundColor = 0x6633b5e5;