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

Source/core/layout/LayoutRubyRun.h

Index: Source/core/layout/LayoutRubyRun.h
diff --git a/Source/core/layout/LayoutRubyRun.h b/Source/core/layout/LayoutRubyRun.h
index ad4a7b4a9e23e61ab62575eb73228780ab96b6e0..7d4b6b576450619415239fa841a0691c0f64a2ff 100644
--- a/Source/core/layout/LayoutRubyRun.h
+++ b/Source/core/layout/LayoutRubyRun.h
@@ -43,7 +43,7 @@ class LayoutRubyText;
 
 class LayoutRubyRun final : public LayoutBlockFlow {
 public:
-    virtual ~LayoutRubyRun();
+    ~LayoutRubyRun() override;
 
     bool hasRubyText() const;
     bool hasRubyBase() const;
@@ -51,18 +51,18 @@ public:
     LayoutRubyBase* rubyBase() const;
     LayoutRubyBase* rubyBaseSafe(); // creates the base if it doesn't already exist
 
-    virtual LayoutObject* layoutSpecialExcludedChild(bool relayoutChildren, SubtreeLayoutScope&) override;
-    virtual void layout() override;
+    LayoutObject* layoutSpecialExcludedChild(bool relayoutChildren, SubtreeLayoutScope&) override;
+    void layout() override;
 
-    virtual bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
-    virtual void addChild(LayoutObject* child, LayoutObject* beforeChild = nullptr) override;
-    virtual void removeChild(LayoutObject* child) override;
+    bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
+    void addChild(LayoutObject* child, LayoutObject* beforeChild = nullptr) override;
+    void removeChild(LayoutObject* child) override;
 
     void getOverhang(bool firstLine, LayoutObject* startLayoutObject, LayoutObject* endLayoutObject, int& startOverhang, int& endOverhang) const;
 
     static LayoutRubyRun* staticCreateRubyRun(const LayoutObject* parentRuby);
 
-    virtual const char* name() const override { return "LayoutRubyRun"; }
+    const char* name() const override { return "LayoutRubyRun"; }
 
 protected:
     LayoutRubyBase* createRubyBase() const;
@@ -70,9 +70,9 @@ protected:
 private:
     LayoutRubyRun();
 
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectRubyRun || LayoutBlockFlow::isOfType(type); }
-    virtual bool createsAnonymousWrapper() const override { return true; }
-    virtual void removeLeftoverAnonymousBlock(LayoutBlock*) override { }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectRubyRun || LayoutBlockFlow::isOfType(type); }
+    bool createsAnonymousWrapper() const override { return true; }
+    void removeLeftoverAnonymousBlock(LayoutBlock*) override { }
 };
 
 DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutRubyRun, isRubyRun());