Fix virtual/override/final usage in the rest of Source/core/.

Source/core/page/Page.h

Index: Source/core/page/Page.h
diff --git a/Source/core/page/Page.h b/Source/core/page/Page.h
index 452abfe04671c8f17365b0b6654ceb42e7573395..caacfa8aac46e0bc86a27bec077aed3e4cfdeb30 100644
--- a/Source/core/page/Page.h
+++ b/Source/core/page/Page.h
@@ -90,7 +90,7 @@ public:
     };
 
     explicit Page(PageClients&);
-    virtual ~Page();
+    ~Page() override;
 
     void makeOrdinary();
 
@@ -209,7 +209,7 @@ private:
     void setNeedsLayoutInAllFrames();
 
     // SettingsDelegate overrides.
-    virtual void settingsChanged(SettingsDelegate::ChangeType) override;
+    void settingsChanged(SettingsDelegate::ChangeType) override;
 
     RefPtrWillBeMember<PageAnimator> m_animator;
     const OwnPtr<AutoscrollController> m_autoscrollController;