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

Source/modules/presentation/PresentationSessionClientCallbacks.h

Index: Source/modules/presentation/PresentationSessionClientCallbacks.h
diff --git a/Source/modules/presentation/PresentationSessionClientCallbacks.h b/Source/modules/presentation/PresentationSessionClientCallbacks.h
index 75d94ebe9f8457d7a5ea4a57d40ad28ba4a8100d..6ac5230807e9cf5b4cd5f1e4e85a8fa89fcea091 100644
--- a/Source/modules/presentation/PresentationSessionClientCallbacks.h
+++ b/Source/modules/presentation/PresentationSessionClientCallbacks.h
@@ -28,11 +28,11 @@ class PresentationSessionClientCallbacks final : public WebPresentationSessionCl
     WTF_MAKE_NONCOPYABLE(PresentationSessionClientCallbacks);
 public:
     PresentationSessionClientCallbacks(PassRefPtrWillBeRawPtr<ScriptPromiseResolver>, Presentation*);
-    virtual ~PresentationSessionClientCallbacks();
+    ~PresentationSessionClientCallbacks() override;
 
     // WebPresentationSessionClientCallbacks implementation.
-    virtual void onSuccess(WebPresentationSessionClient*) override;
-    virtual void onError(WebPresentationError*) override;
+    void onSuccess(WebPresentationSessionClient*) override;
+    void onError(WebPresentationError*) override;
 
 private:
     RefPtrWillBePersistent<ScriptPromiseResolver> m_resolver;