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

Source/modules/accessibility/AXObjectTest.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/accessibility/AXObject.h"
 
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/testing/DummyPageHolder.h"
 #include <gtest/gtest.h>
 
 namespace blink {
 
 class AXObjectTest : public testing::Test {
 protected:
     Document& document() { return m_pageHolder->document(); }
 
 private:
-    virtual void SetUp() override;
+    void SetUp() override;
 
     OwnPtr<DummyPageHolder> m_pageHolder;
 };
 
 void AXObjectTest::SetUp()
 {
     m_pageHolder = DummyPageHolder::create(IntSize(800, 600));
 }
 
 TEST_F(AXObjectTest, IsARIAWidget)
@@ skipping 20 matching lines @@
     EXPECT_TRUE(AXObject::isInsideFocusableElementOrARIAWidget(*root->getElementById("button-caps")));
     EXPECT_TRUE(AXObject::isInsideFocusableElementOrARIAWidget(*root->getElementById("button-second")));
     EXPECT_FALSE(AXObject::isInsideFocusableElementOrARIAWidget(*root->getElementById("aria-bogus")));
     EXPECT_TRUE(AXObject::isInsideFocusableElementOrARIAWidget(*root->getElementById("aria-selected")));
     EXPECT_TRUE(AXObject::isInsideFocusableElementOrARIAWidget(*root->getElementById("haspopup")));
     EXPECT_TRUE(AXObject::isInsideFocusableElementOrARIAWidget(*root->getElementById("focusable")));
     EXPECT_TRUE(AXObject::isInsideFocusableElementOrARIAWidget(*root->getElementById("focusable-parent")));
 }
 
 }