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

Source/core/workers/WorkerConsole.h

Index: Source/core/workers/WorkerConsole.h
diff --git a/Source/core/workers/WorkerConsole.h b/Source/core/workers/WorkerConsole.h
index ef1b8870c77eb3456c8fea04c5f451aefdb52e2f..f5d81ebd69f828b30aadb5338448a1fbe80a3733 100644
--- a/Source/core/workers/WorkerConsole.h
+++ b/Source/core/workers/WorkerConsole.h
@@ -51,13 +51,13 @@ public:
     {
         return new WorkerConsole(scope);
     }
-    virtual ~WorkerConsole();
+    ~WorkerConsole() override;
 
     DECLARE_VIRTUAL_TRACE();
 
 protected:
-    virtual ExecutionContext* context() override;
-    virtual void reportMessageToConsole(PassRefPtrWillBeRawPtr<ConsoleMessage>) override;
+    ExecutionContext* context() override;
+    void reportMessageToConsole(PassRefPtrWillBeRawPtr<ConsoleMessage>) override;
 
 private:
     explicit WorkerConsole(WorkerGlobalScope*);