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

Source/core/testing/InternalSettings.cpp

Index: Source/core/testing/InternalSettings.cpp
diff --git a/Source/core/testing/InternalSettings.cpp b/Source/core/testing/InternalSettings.cpp
index 69391751a85225422ded62965049d6988b1f52d8..ec3b7c3e0e574b229602a82928ebae46f04f72d7 100644
--- a/Source/core/testing/InternalSettings.cpp
+++ b/Source/core/testing/InternalSettings.cpp
@@ -117,7 +117,7 @@ public:
         : m_internalSettings(InternalSettings::create(page)) { }
     virtual ~InternalSettingsWrapper() { m_internalSettings->hostDestroyed(); }
 #if ENABLE(ASSERT)
-    virtual bool isRefCountedWrapper() const override { return true; }
+    bool isRefCountedWrapper() const override { return true; }
 #endif
     InternalSettings* internalSettings() const { return m_internalSettings.get(); }