Fix virtual/override/final usage in Source/core/html/.

Source/core/html/HTMLTextFormControlElementTest.cpp

Index: Source/core/html/HTMLTextFormControlElementTest.cpp
diff --git a/Source/core/html/HTMLTextFormControlElementTest.cpp b/Source/core/html/HTMLTextFormControlElementTest.cpp
index c77d0a3b9c685b776e9407559ad28ae45d2ce897..d61733ac01499ea4342024546717473cbacfe66b 100644
--- a/Source/core/html/HTMLTextFormControlElementTest.cpp
+++ b/Source/core/html/HTMLTextFormControlElementTest.cpp
@@ -51,17 +51,17 @@ class DummyTextCheckerClient : public EmptyTextCheckerClient {
 public:
     ~DummyTextCheckerClient() { }
 
-    virtual bool shouldEraseMarkersAfterChangeSelection(TextCheckingType) const override { return false; }
+    bool shouldEraseMarkersAfterChangeSelection(TextCheckingType) const override { return false; }
 };
 
 class DummySpellCheckerClient : public EmptySpellCheckerClient {
 public:
     virtual ~DummySpellCheckerClient() { }
 
-    virtual bool isContinuousSpellCheckingEnabled() override { return true; }
-    virtual bool isGrammarCheckingEnabled() override { return true; }
+    bool isContinuousSpellCheckingEnabled() override { return true; }
+    bool isGrammarCheckingEnabled() override { return true; }
 
-    virtual TextCheckerClient& textChecker() override { return m_dummyTextCheckerClient; }
+    TextCheckerClient& textChecker() override { return m_dummyTextCheckerClient; }
 
 private:
     DummyTextCheckerClient m_dummyTextCheckerClient;