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

Source/core/layout/svg/LayoutSVGResourceFilter.h

Index: Source/core/layout/svg/LayoutSVGResourceFilter.h
diff --git a/Source/core/layout/svg/LayoutSVGResourceFilter.h b/Source/core/layout/svg/LayoutSVGResourceFilter.h
index 3ee5b7858b7faa86e1b73edbf02a06d6d7c80bc5..7ef6a74ab12964c024134a0c1e5cdf66e7240a78 100644
--- a/Source/core/layout/svg/LayoutSVGResourceFilter.h
+++ b/Source/core/layout/svg/LayoutSVGResourceFilter.h
@@ -70,16 +70,15 @@ private:
 class LayoutSVGResourceFilter final : public LayoutSVGResourceContainer {
 public:
     explicit LayoutSVGResourceFilter(SVGFilterElement*);
+    ~LayoutSVGResourceFilter() override;
 
-    virtual ~LayoutSVGResourceFilter();
+    bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
 
-    virtual bool isChildAllowed(LayoutObject*, const ComputedStyle&) const override;
+    const char* name() const override { return "LayoutSVGResourceFilter"; }
+    bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectSVGResourceFilter || LayoutSVGResourceContainer::isOfType(type); }
 
-    virtual const char* name() const override { return "LayoutSVGResourceFilter"; }
-    virtual bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectSVGResourceFilter || LayoutSVGResourceContainer::isOfType(type); }
-
-    virtual void removeAllClientsFromCache(bool markForInvalidation = true) override;
-    virtual void removeClientFromCache(LayoutObject*, bool markForInvalidation = true) override;
+    void removeAllClientsFromCache(bool markForInvalidation = true) override;
+    void removeClientFromCache(LayoutObject*, bool markForInvalidation = true) override;
 
     FloatRect resourceBoundingBox(const LayoutObject*);
 
@@ -91,13 +90,13 @@ public:
     void primitiveAttributeChanged(LayoutObject*, const QualifiedName&);
 
     static const LayoutSVGResourceType s_resourceType = FilterResourceType;
-    virtual LayoutSVGResourceType resourceType() const override { return s_resourceType; }
+    LayoutSVGResourceType resourceType() const override { return s_resourceType; }
 
     FilterData* getFilterDataForLayoutObject(LayoutObject* object) { return m_filter.get(object); }
     void setFilterDataForLayoutObject(LayoutObject* object, PassOwnPtrWillBeRawPtr<FilterData> filterData) { m_filter.set(object, filterData); }
 
 protected:
-    virtual void willBeDestroyed() override;
+    void willBeDestroyed() override;
 
 private:
     void disposeFilterMap();