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

Source/platform/weborigin/KURL.cpp

Index: Source/platform/weborigin/KURL.cpp
diff --git a/Source/platform/weborigin/KURL.cpp b/Source/platform/weborigin/KURL.cpp
index 6b4fc4a21f964e48709ab3b9854820ae127d0c2f..22e8e9b5df7d65af56a5072f44d998a17fb59dc6 100644
--- a/Source/platform/weborigin/KURL.cpp
+++ b/Source/platform/weborigin/KURL.cpp
@@ -101,7 +101,7 @@ public:
     {
     }
 
-    virtual void ConvertFromUTF16(const url::UTF16Char* input, int inputLength, url::CanonOutput* output) override
+    void ConvertFromUTF16(const url::UTF16Char* input, int inputLength, url::CanonOutput* output) override
     {
         CString encoded = m_encoding->normalizeAndEncode(String(input, inputLength), WTF::URLEncodedEntitiesForUnencodables);
         output->Append(encoded.data(), static_cast<int>(encoded.length()));