Cast: Added support for AES-CTR crypto.

media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.h

 // Copyright 2013 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_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_
 #define MEDIA_CAST_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_
 
 #include <cmath>
 #include <list>
 #include <map>
@@ skipping 32 matching lines @@
   // Return the next sequence number, and increment by one. Enables unique
   // incremental sequence numbers for every packet (including retransmissions).
   uint16 NextSequenceNumber();
 
   int send_packets_count() { return send_packets_count_; }
 
   size_t send_octet_count() { return send_octet_count_; }
 
  private:
   void Cast(bool is_key, uint8 reference_frame_id,
-    uint32 timestamp, std::vector<uint8> data);
+      uint32 timestamp, const std::string& data);
+
   void BuildCommonRTPheader(std::vector<uint8>* packet, bool marker_bit,
       uint32 time_stamp);
 
   RtpPacketizerConfig config_;
   PacedPacketSender* transport_;
   PacketStorage* packet_storage_;
 
   base::TimeTicks time_last_sent_rtp_timestamp_;
   uint16 sequence_number_;
   uint32 rtp_timestamp_;
   uint8 frame_id_;
   uint16 packet_id_;
 
   int send_packets_count_;
   size_t send_octet_count_;
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_