Update more bindings classes to use OVERRIDE / FINAL when needed

Source/bindings/v8/ScriptHeapSnapshot.cpp

 /*
  * 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 45 matching lines @@
     return m_snapshot->GetUid();
 }
 
 SnapshotObjectId ScriptHeapSnapshot::maxSnapshotJSObjectId() const
 {
     return m_snapshot->GetMaxSnapshotJSObjectId();
 }
 
 namespace {
 
-class OutputStreamAdapter : public v8::OutputStream {
+class OutputStreamAdapter FINAL : public v8::OutputStream {
 public:
     OutputStreamAdapter(ScriptHeapSnapshot::OutputStream* output)
         : m_output(output) { }
-    void EndOfStream() { m_output->Close(); }
-    int GetChunkSize() { return 102400; }
-    WriteResult WriteAsciiChunk(char* data, int size)
+    virtual void EndOfStream() OVERRIDE { m_output->Close(); }
+    virtual int GetChunkSize() OVERRIDE { return 102400; }
+    virtual WriteResult WriteAsciiChunk(char* data, int size) OVERRIDE
     {
         m_output->Write(String(data, size));
         return kContinue;
     }
 private:
     ScriptHeapSnapshot::OutputStream* m_output;
 };
 
 } // namespace
 
 void ScriptHeapSnapshot::writeJSON(ScriptHeapSnapshot::OutputStream* stream)
 {
     OutputStreamAdapter outputStream(stream);
     m_snapshot->Serialize(&outputStream, v8::HeapSnapshot::kJSON);
 }
 
 } // namespace WebCore