Chromecast: virtual/override cleanup.

chromecast/media/base/decrypt_context_clearkey.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMECAST_MEDIA_BASE_DECRYPT_CONTEXT_CLEARKEY_H_
 #define CHROMECAST_MEDIA_BASE_DECRYPT_CONTEXT_CLEARKEY_H_
 
 #include "base/macros.h"
 #include "chromecast/media/base/decrypt_context.h"
 
 namespace chromecast {
 namespace media {
 
 class DecryptContextClearKey : public DecryptContext {
  public:
   // Note: DecryptContextClearKey does not take ownership of |key|.
   explicit DecryptContextClearKey(crypto::SymmetricKey* key);
 
   // DecryptContext implementation.
-  virtual crypto::SymmetricKey* GetKey() const override;
+  crypto::SymmetricKey* GetKey() const override;
 
  private:
-  virtual ~DecryptContextClearKey();
+  ~DecryptContextClearKey() override;
 
   crypto::SymmetricKey* const key_;
 
   DISALLOW_COPY_AND_ASSIGN(DecryptContextClearKey);
 };
 
 }  // namespace media
 }  // namespace chromecast
 
-#endif  // CHROMECAST_MEDIA_BASE_DECRYPT_CONTEXT_CLEARKEY_H_
+#endif  // CHROMECAST_MEDIA_BASE_DECRYPT_CONTEXT_CLEARKEY_H_