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

Source/core/html/PluginDocument.cpp

Index: Source/core/html/PluginDocument.cpp
diff --git a/Source/core/html/PluginDocument.cpp b/Source/core/html/PluginDocument.cpp
index f66a685f35646bbe72f45510b56b2302be01a238..2ea09919a346be25108c9cfb0e5358a882a42719 100644
--- a/Source/core/html/PluginDocument.cpp
+++ b/Source/core/html/PluginDocument.cpp
@@ -51,7 +51,7 @@ public:
         return adoptRefWillBeNoop(new PluginDocumentParser(document));
     }
 
-    virtual void trace(Visitor* visitor) OVERRIDE
+    virtual void trace(Visitor* visitor) override
     {
         visitor->trace(m_embedElement);
         RawDataDocumentParser::trace(visitor);
@@ -64,9 +64,9 @@ private:
     {
     }
 
-    virtual void appendBytes(const char*, size_t) OVERRIDE;
+    virtual void appendBytes(const char*, size_t) override;
 
-    virtual void finish() OVERRIDE;
+    virtual void finish() override;
 
     void createDocumentStructure();