Standardize usage of virtual/override/final in media/

media/cdm/aes_decryptor.h

Index: media/cdm/aes_decryptor.h
diff --git a/media/cdm/aes_decryptor.h b/media/cdm/aes_decryptor.h
index 1275dd5321dc4e9fe8a2beb1f01d42621742b786..edae707b73a841d3cbac04478a46128fadf35c82 100644
--- a/media/cdm/aes_decryptor.h
+++ b/media/cdm/aes_decryptor.h
@@ -30,54 +30,51 @@ class MEDIA_EXPORT AesDecryptor : public MediaKeys, public Decryptor {
   AesDecryptor(const SessionMessageCB& session_message_cb,
                const SessionClosedCB& session_closed_cb,
                const SessionKeysChangeCB& session_keys_change_cb);
-  virtual ~AesDecryptor();
+  ~AesDecryptor() override;
 
   // MediaKeys implementation.
-  virtual void SetServerCertificate(
-      const uint8* certificate_data,
-      int certificate_data_length,
-      scoped_ptr<SimpleCdmPromise> promise) override;
-  virtual void CreateSession(const std::string& init_data_type,
-                             const uint8* init_data,
-                             int init_data_length,
-                             SessionType session_type,
-                             scoped_ptr<NewSessionCdmPromise> promise) override;
-  virtual void LoadSession(const std::string& web_session_id,
-                           scoped_ptr<NewSessionCdmPromise> promise) override;
-  virtual void UpdateSession(const std::string& web_session_id,
-                             const uint8* response,
-                             int response_length,
-                             scoped_ptr<SimpleCdmPromise> promise) override;
-  virtual void CloseSession(const std::string& web_session_id,
+  void SetServerCertificate(const uint8* certificate_data,
+                            int certificate_data_length,
                             scoped_ptr<SimpleCdmPromise> promise) override;
-  virtual void RemoveSession(const std::string& web_session_id,
-                             scoped_ptr<SimpleCdmPromise> promise) override;
-  virtual void GetUsableKeyIds(const std::string& web_session_id,
-                               scoped_ptr<KeyIdsPromise> promise) override;
-  virtual Decryptor* GetDecryptor() override;
+  void CreateSession(const std::string& init_data_type,
+                     const uint8* init_data,
+                     int init_data_length,
+                     SessionType session_type,
+                     scoped_ptr<NewSessionCdmPromise> promise) override;
+  void LoadSession(const std::string& web_session_id,
+                   scoped_ptr<NewSessionCdmPromise> promise) override;
+  void UpdateSession(const std::string& web_session_id,
+                     const uint8* response,
+                     int response_length,
+                     scoped_ptr<SimpleCdmPromise> promise) override;
+  void CloseSession(const std::string& web_session_id,
+                    scoped_ptr<SimpleCdmPromise> promise) override;
+  void RemoveSession(const std::string& web_session_id,
+                     scoped_ptr<SimpleCdmPromise> promise) override;
+  void GetUsableKeyIds(const std::string& web_session_id,
+                       scoped_ptr<KeyIdsPromise> promise) override;
+  Decryptor* GetDecryptor() override;
 #if defined(ENABLE_BROWSER_CDMS)
   virtual int GetCdmId() const override;
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
   // Decryptor implementation.
-  virtual void RegisterNewKeyCB(StreamType stream_type,
-                                const NewKeyCB& key_added_cb) override;
-  virtual void Decrypt(StreamType stream_type,
-                       const scoped_refptr<DecoderBuffer>& encrypted,
-                       const DecryptCB& decrypt_cb) override;
-  virtual void CancelDecrypt(StreamType stream_type) override;
-  virtual void InitializeAudioDecoder(const AudioDecoderConfig& config,
-                                      const DecoderInitCB& init_cb) override;
-  virtual void InitializeVideoDecoder(const VideoDecoderConfig& config,
-                                      const DecoderInitCB& init_cb) override;
-  virtual void DecryptAndDecodeAudio(
-      const scoped_refptr<DecoderBuffer>& encrypted,
-      const AudioDecodeCB& audio_decode_cb) override;
-  virtual void DecryptAndDecodeVideo(
-      const scoped_refptr<DecoderBuffer>& encrypted,
-      const VideoDecodeCB& video_decode_cb) override;
-  virtual void ResetDecoder(StreamType stream_type) override;
-  virtual void DeinitializeDecoder(StreamType stream_type) override;
+  void RegisterNewKeyCB(StreamType stream_type,
+                        const NewKeyCB& key_added_cb) override;
+  void Decrypt(StreamType stream_type,
+               const scoped_refptr<DecoderBuffer>& encrypted,
+               const DecryptCB& decrypt_cb) override;
+  void CancelDecrypt(StreamType stream_type) override;
+  void InitializeAudioDecoder(const AudioDecoderConfig& config,
+                              const DecoderInitCB& init_cb) override;
+  void InitializeVideoDecoder(const VideoDecoderConfig& config,
+                              const DecoderInitCB& init_cb) override;
+  void DecryptAndDecodeAudio(const scoped_refptr<DecoderBuffer>& encrypted,
+                             const AudioDecodeCB& audio_decode_cb) override;
+  void DecryptAndDecodeVideo(const scoped_refptr<DecoderBuffer>& encrypted,
+                             const VideoDecodeCB& video_decode_cb) override;
+  void ResetDecoder(StreamType stream_type) override;
+  void DeinitializeDecoder(StreamType stream_type) override;
 
  private:
   // TODO(fgalligan): Remove this and change KeyMap to use crypto::SymmetricKey