Update platform classes to use OVERRIDE / FINAL when needed

Source/platform/text/LineEnding.cpp

 /*
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 26 matching lines @@
 
 namespace {
 
 class OutputBuffer {
 public:
     virtual char* allocate(size_t) = 0;
     virtual void copy(const CString&) = 0;
     virtual ~OutputBuffer() { }
 };
 
-class CStringBuffer : public OutputBuffer {
+class CStringBuffer FINAL : public OutputBuffer {
 public:
     CStringBuffer(CString& buffer)
         : m_buffer(buffer)
     {
     }
     virtual ~CStringBuffer() { }
 
-    virtual char* allocate(size_t size)
+    virtual char* allocate(size_t size) OVERRIDE
     {
         char* ptr;
         m_buffer = CString::newUninitialized(size, ptr);
         return ptr;
     }
 
-    virtual void copy(const CString& source)
+    virtual void copy(const CString& source) OVERRIDE
     {
         m_buffer = source;
     }
 
     const CString& buffer() const { return m_buffer; }
 
 private:
     CString m_buffer;
 };
 
-class VectorCharAppendBuffer : public OutputBuffer {
+class VectorCharAppendBuffer FINAL : public OutputBuffer {
 public:
     VectorCharAppendBuffer(Vector<char>& buffer)
         : m_buffer(buffer)
     {
     }
     virtual ~VectorCharAppendBuffer() { }
 
-    virtual char* allocate(size_t size)
+    virtual char* allocate(size_t size) OVERRIDE
     {
         size_t oldSize = m_buffer.size();
         m_buffer.grow(oldSize + size);
         return m_buffer.data() + oldSize;
     }
 
-    virtual void copy(const CString& source)
+    virtual void copy(const CString& source) OVERRIDE
     {
         m_buffer.append(source.data(), source.length());
     }
 
 private:
     Vector<char>& m_buffer;
 };
 
 void internalNormalizeLineEndingsToCRLF(const CString& from, OutputBuffer& buffer)
 {
@@ skipping 129 matching lines @@
 {
 #if OS(WIN)
     VectorCharAppendBuffer buffer(result);
     internalNormalizeLineEndingsToCRLF(from, buffer);
 #else
     normalizeLineEndingsToLF(from, result);
 #endif
 }
 
 } // namespace WebCore