Cast: Added support for AES-CTR crypto.

media/cast/cast_config.h

Index: media/cast/cast_config.h
diff --git a/media/cast/cast_config.h b/media/cast/cast_config.h
index 71073f43e5ba218636d1cd05a01565dbce8147b2..f9a81cee7a2c37899e9e68ff60b0bebaf879d387 100644
--- a/media/cast/cast_config.h
+++ b/media/cast/cast_config.h
@@ -53,6 +53,9 @@ struct AudioSenderConfig {
   int channels;
   int bitrate;
   AudioCodec codec;
+
+  std::string aes_key;  // Binary strings of size kAesKeySize.
+  std::string aes_iv_mask;  // Binary strings of size kAesKeySize.
 };
 
 struct VideoSenderConfig {
@@ -83,6 +86,9 @@ struct VideoSenderConfig {
   int max_number_of_video_buffers_used;  // Max value depend on codec.
   VideoCodec codec;
   int number_of_cores;
+
+  std::string aes_key;  // Binary strings of size kAesKeySize.
+  std::string aes_iv_mask;  // Binary strings of size kAesKeySize.
 };
 
 struct AudioReceiverConfig {
@@ -103,6 +109,9 @@ struct AudioReceiverConfig {
   int frequency;
   int channels;
   AudioCodec codec;
+
+  std::string aes_key;  // Binary strings of size kAesKeySize.
+  std::string aes_iv_mask;  // Binary strings of size kAesKeySize.
 };
 
 struct VideoReceiverConfig {
@@ -126,6 +135,9 @@ struct VideoReceiverConfig {
   // from catching up after a glitch.
   bool decoder_faster_than_max_frame_rate;
   VideoCodec codec;
+
+  std::string aes_key;  // Binary strings of size kAesKeySize.
+  std::string aes_iv_mask;  // Binary strings of size kAesKeySize.
 };
 
 struct I420VideoPlane {
@@ -150,7 +162,7 @@ struct EncodedVideoFrame {
   bool key_frame;
   uint8 frame_id;
   uint8 last_referenced_frame_id;
-  std::vector<uint8> data;
+  std::string data;
 };
 
 struct PcmAudioFrame {
@@ -170,7 +182,7 @@ struct EncodedAudioFrame {
   uint8 frame_id;  // Needed to release the frame. Not used send side.
   int samples;  // Needed send side to advance the RTP timestamp.
                 // Not used receive side.
-  std::vector<uint8> data;
+  std::string data;
 };
 
 typedef std::vector<uint8> Packet;