Removed unused NeedKey callback from Decryptors.

media/crypto/aes_decryptor.h

 // Copyright (c) 2012 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 MEDIA_CRYPTO_AES_DECRYPTOR_H_
 #define MEDIA_CRYPTO_AES_DECRYPTOR_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 11 matching lines @@
 }
 
 namespace media {
 
 // Decrypts an AES encrypted buffer into an unencrypted buffer. The AES
 // encryption must be CTR with a key size of 128bits.
 class MEDIA_EXPORT AesDecryptor : public MediaKeys, public Decryptor {
  public:
   AesDecryptor(const KeyAddedCB& key_added_cb,
                const KeyErrorCB& key_error_cb,
-               const KeyMessageCB& key_message_cb,
-               const NeedKeyCB& need_key_cb);
+               const KeyMessageCB& key_message_cb);
   virtual ~AesDecryptor();
 
   // MediaKeys implementation.
   virtual bool GenerateKeyRequest(const std::string& type,
                                   const uint8* init_data,
                                   int init_data_length) OVERRIDE;
   virtual void AddKey(const uint8* key, int key_length,
                       const uint8* init_data, int init_data_length,
                       const std::string& session_id) OVERRIDE;
   virtual void CancelKeyRequest(const std::string& session_id) OVERRIDE;
@@ skipping 47 matching lines @@
   void SetKey(const std::string& key_id, scoped_ptr<DecryptionKey> key);
 
   // Gets a DecryptionKey associated with |key_id|. The AesDecryptor still owns
   // the key. Returns NULL if no key is associated with |key_id|.
   DecryptionKey* GetKey(const std::string& key_id) const;
 
   // Callbacks for firing key events.
   KeyAddedCB key_added_cb_;
   KeyErrorCB key_error_cb_;
   KeyMessageCB key_message_cb_;
-  NeedKeyCB need_key_cb_;
 
   // KeyMap owns the DecryptionKey* and must delete them when they are
   // not needed any more.
   typedef base::hash_map<std::string, DecryptionKey*> KeyMap;
 
   // Since only Decrypt() is called off the renderer thread, we only need to
   // protect |key_map_|, the only member variable that is shared between
   // Decrypt() and other methods.
   KeyMap key_map_;  // Protected by the |key_map_lock_|.
   mutable base::Lock key_map_lock_;  // Protects the |key_map_|.
 
   // Make session ID unique per renderer by making it static.
   // TODO(xhwang): Make session ID more strictly defined if needed:
   // https://www.w3.org/Bugs/Public/show_bug.cgi?id=16739#c0
   static uint32 next_session_id_;
 
   NewKeyCB new_audio_key_cb_;
   NewKeyCB new_video_key_cb_;
 
   DISALLOW_COPY_AND_ASSIGN(AesDecryptor);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CRYPTO_AES_DECRYPTOR_H_