Fix virtual/override/final usage in Source/web/.

Source/web/InspectorOverlayImpl.cpp

Index: Source/web/InspectorOverlayImpl.cpp
diff --git a/Source/web/InspectorOverlayImpl.cpp b/Source/web/InspectorOverlayImpl.cpp
index d8b827a1e8a1ff37d96fa15080ba7980daf29948..aaa5205f6741de4b3196138229524c15e1107bf4 100644
--- a/Source/web/InspectorOverlayImpl.cpp
+++ b/Source/web/InspectorOverlayImpl.cpp
@@ -70,17 +70,17 @@ public:
         , m_overlay(overlay)
     { }
 
-    virtual void setCursor(const Cursor& cursor) override
+    void setCursor(const Cursor& cursor) override
     {
         m_client.setCursor(cursor);
     }
 
-    virtual void setToolTip(const String& tooltip, TextDirection direction) override
+    void setToolTip(const String& tooltip, TextDirection direction) override
     {
         m_client.setToolTip(tooltip, direction);
     }
 
-    virtual void invalidateRect(const IntRect&) override
+    void invalidateRect(const IntRect&) override
     {
         m_overlay->invalidate();
     }