Cast: Adding helper crypto classes

media/cast/transport/transport_audio_sender.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 MEDIA_CAST_TRANSPORT_TRANSPORT_AUDIO_SENDER_H_
 #define MEDIA_CAST_TRANSPORT_TRANSPORT_AUDIO_SENDER_H_
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "media/cast/transport/rtp_sender/rtp_sender.h"
-
-namespace crypto {
-class Encryptor;
-class SymmetricKey;
-}
+#include "media/cast/transport/transport_encryption_handler.h"
 
 namespace media {
 namespace cast {
 namespace transport {
 
 class PacedSender;
 
 // It's only called from the main cast transport thread.
 class TransportAudioSender : public base::NonThreadSafe {
  public:
@@ skipping 19 matching lines @@
 
  private:
   friend class LocalRtcpAudioSenderFeedback;
 
   // Caller must allocate the destination |encrypted_frame|. The data member
   // will be resized to hold the encrypted size.
   bool EncryptAudioFrame(const EncodedAudioFrame& audio_frame,
                          EncodedAudioFrame* encrypted_frame);
 
   RtpSender rtp_sender_;
+  TransportEncryptionHandler encryptor_;
   bool initialized_;
-  scoped_ptr<crypto::SymmetricKey> key_;
-  scoped_ptr<crypto::Encryptor> encryptor_;
-  std::string iv_mask_;
+
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(TransportAudioSender);
 };
 
 }  // namespace transport
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_TRANSPORT_TRANSPORT_AUDIO_SENDER_H_