Replace OVERRIDE and FINAL with their C++11 counterparts in core/accessibility

Source/core/accessibility/AXTableHeaderContainer.h

Index: Source/core/accessibility/AXTableHeaderContainer.h
diff --git a/Source/core/accessibility/AXTableHeaderContainer.h b/Source/core/accessibility/AXTableHeaderContainer.h
index 5d252a51dd2c3b943920252087148b1ea29f9a2d..9b5c05f7c7e5fe9069c7a97637bf9004d0fe4c21 100644
--- a/Source/core/accessibility/AXTableHeaderContainer.h
+++ b/Source/core/accessibility/AXTableHeaderContainer.h
@@ -34,7 +34,7 @@
 
 namespace blink {
 
-class AXTableHeaderContainer FINAL : public AXMockObject {
+class AXTableHeaderContainer final : public AXMockObject {
 
 private:
     AXTableHeaderContainer();
@@ -42,16 +42,16 @@ public:
     static PassRefPtr<AXTableHeaderContainer> create();
     virtual ~AXTableHeaderContainer();
 
-    virtual AccessibilityRole roleValue() const OVERRIDE { return TableHeaderContainerRole; }
+    virtual AccessibilityRole roleValue() const override { return TableHeaderContainerRole; }
 
-    virtual void addChildren() OVERRIDE;
+    virtual void addChildren() override;
 
-    virtual LayoutRect elementRect() const OVERRIDE;
+    virtual LayoutRect elementRect() const override;
 
 private:
     LayoutRect m_headerRect;
 
-    virtual bool computeAccessibilityIsIgnored() const OVERRIDE;
+    virtual bool computeAccessibilityIsIgnored() const override;
 };
 
 } // namespace blink