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

Source/bindings/core/v8/ScriptPromisePropertyTest.cpp

Index: Source/bindings/core/v8/ScriptPromisePropertyTest.cpp
diff --git a/Source/bindings/core/v8/ScriptPromisePropertyTest.cpp b/Source/bindings/core/v8/ScriptPromisePropertyTest.cpp
index ca116fb80de32f1612f179b4b527b6986d6e6648..58b81c37d03539ee1aa85ef8a512c606adb2b835 100644
--- a/Source/bindings/core/v8/ScriptPromisePropertyTest.cpp
+++ b/Source/bindings/core/v8/ScriptPromisePropertyTest.cpp
@@ -44,7 +44,7 @@ private:
     {
     }
 
-    virtual ScriptValue call(ScriptValue) override;
+    ScriptValue call(ScriptValue) override;
 };
 
 ScriptValue NotReached::call(ScriptValue)
@@ -69,7 +69,7 @@ private:
     {
     }
 
-    virtual ScriptValue call(ScriptValue arg) override
+    ScriptValue call(ScriptValue arg) override
     {
         m_value = arg;
         m_callCount++;
@@ -187,7 +187,7 @@ public:
     Property* property() { return m_holder->property(); }
     ScriptPromise promise(DOMWrapperWorld& world) { return property()->promise(world); }
 
-    virtual void destroyContext() override
+    void destroyContext() override
     {
         m_holder = nullptr;
         ScriptPromisePropertyTestBase::destroyContext();