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

Source/bindings/core/v8/ScriptPromiseTest.cpp

 /*
  * Copyright (C) 2014 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 44 matching lines @@
         return self->bindToV8Function();
     }
 
 private:
     Function(ScriptState* scriptState, String* value)
         : ScriptFunction(scriptState)
         , m_value(value)
     {
     }
 
-    virtual ScriptValue call(ScriptValue value) override
+    ScriptValue call(ScriptValue value) override
     {
         ASSERT(!value.isEmpty());
         *m_value = toCoreString(value.v8Value()->ToString(scriptState()->context()).ToLocalChecked());
         return value;
     }
 
     String* m_value;
 };
 
 class ScriptPromiseTest : public testing::Test {
@@ skipping 181 matching lines @@
 
     isolate()->RunMicrotasks();
 
     EXPECT_EQ(String(), onFulfilled);
     EXPECT_EQ("SyntaxError: some syntax error", onRejected);
 }
 
 } // namespace
 
 } // namespace blink