Cast: Added support for AES-CTR crypto.

media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.cc

 // 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.
 
 #include "media/cast/rtp_sender/rtp_packetizer/rtp_packetizer.h"
 
 #include "base/logging.h"
 #include "media/cast/cast_defines.h"
 #include "media/cast/pacing/paced_sender.h"
 #include "net/base/big_endian.h"
@@ skipping 64 matching lines @@
 
   *time_sent = time_last_sent_rtp_timestamp_;
   *rtp_timestamp = rtp_timestamp_;
   return true;
 }
 
 void RtpPacketizer::Cast(bool is_key,
                          uint32 frame_id,
                          uint32 reference_frame_id,
                          uint32 timestamp,
-                         Packet data) {
+                         const std::string& data) {
   uint16 rtp_header_length = kCommonRtpHeaderLength + kCastRtpHeaderLength;
   uint16 max_length = config_.max_payload_length - rtp_header_length - 1;
 
   // Split the payload evenly (round number up).
   size_t num_packets = (data.size() + max_length) / max_length;
   size_t payload_length = (data.size() + num_packets) / num_packets;
   DCHECK_LE(payload_length, max_length) << "Invalid argument";
 
   PacketList packets;
 
   size_t remaining_size = data.size();
-  Packet::iterator data_iter = data.begin();
+  std::string::const_iterator data_iter = data.begin();
   while (remaining_size > 0) {
     Packet packet;
 
     if (remaining_size < payload_length) {
       payload_length = remaining_size;
     }
     remaining_size -= payload_length;
     BuildCommonRTPheader(&packet, remaining_size == 0, timestamp);
 
     // Build Cast header.
@@ skipping 38 matching lines @@
   packet->resize(start_size + 10);
   net::BigEndianWriter big_endian_writer(&((*packet)[start_size]), 10);
   big_endian_writer.WriteU16(sequence_number_);
   big_endian_writer.WriteU32(time_stamp);
   big_endian_writer.WriteU32(config_.ssrc);
   ++sequence_number_;
 }
 
 }  // namespace cast
 }  // namespace media