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

Source/modules/encryptedmedia/SimpleContentDecryptionModuleResultPromise.h

Index: Source/modules/encryptedmedia/SimpleContentDecryptionModuleResultPromise.h
diff --git a/Source/modules/encryptedmedia/SimpleContentDecryptionModuleResultPromise.h b/Source/modules/encryptedmedia/SimpleContentDecryptionModuleResultPromise.h
index d89e16752808d079b408364cf0a669bd55943f76..173730b58623408d20a9d12d88ddcb12cad6d62e 100644
--- a/Source/modules/encryptedmedia/SimpleContentDecryptionModuleResultPromise.h
+++ b/Source/modules/encryptedmedia/SimpleContentDecryptionModuleResultPromise.h
@@ -16,10 +16,10 @@ namespace blink {
 class SimpleContentDecryptionModuleResultPromise : public ContentDecryptionModuleResultPromise {
 public:
     explicit SimpleContentDecryptionModuleResultPromise(ScriptState*);
-    virtual ~SimpleContentDecryptionModuleResultPromise();
+    ~SimpleContentDecryptionModuleResultPromise() override;
 
     // ContentDecryptionModuleResultPromise implementation.
-    virtual void complete() override;
+    void complete() override;
 };
 
 } // namespace blink