Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/[css|rendering|clipboard]

Source/core/plugins/DOMPlugin.h

Index: Source/core/plugins/DOMPlugin.h
diff --git a/Source/core/plugins/DOMPlugin.h b/Source/core/plugins/DOMPlugin.h
index fa65605547086609d6881bf7d7802cbd133d53ab..5e79a8aab57511a4340383acb1d5dbc7937fe6e9 100644
--- a/Source/core/plugins/DOMPlugin.h
+++ b/Source/core/plugins/DOMPlugin.h
@@ -33,7 +33,7 @@ namespace blink {
 class Plugin;
 class PluginData;
 
-class DOMPlugin FINAL : public RefCountedWillBeGarbageCollectedFinalized<DOMPlugin>, public ScriptWrappable, public FrameDestructionObserver {
+class DOMPlugin final : public RefCountedWillBeGarbageCollectedFinalized<DOMPlugin>, public ScriptWrappable, public FrameDestructionObserver {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(DOMPlugin);
     DEFINE_WRAPPERTYPEINFO();
 public:
@@ -53,7 +53,7 @@ public:
     bool canGetItemsForName(const AtomicString& propertyName);
     PassRefPtrWillBeRawPtr<DOMMimeType> namedItem(const AtomicString& propertyName);
 
-    virtual void trace(Visitor*) OVERRIDE;
+    virtual void trace(Visitor*) override;
 
 private:
     const PluginInfo& pluginInfo() const { return m_pluginData->plugins()[m_index]; }