Set AES key and IV mask to CastSender

chrome/common/extensions/api/cast_streaming_rtp_stream.idl

Index: chrome/common/extensions/api/cast_streaming_rtp_stream.idl
diff --git a/chrome/common/extensions/api/cast_streaming_rtp_stream.idl b/chrome/common/extensions/api/cast_streaming_rtp_stream.idl
index b79cbf17e0da57b569b54a222306e622b1baff08..51fdd1d33076d8a6495b2d7c770be12f5c0c5666 100644
--- a/chrome/common/extensions/api/cast_streaming_rtp_stream.idl
+++ b/chrome/common/extensions/api/cast_streaming_rtp_stream.idl
@@ -21,7 +21,7 @@ namespace cast.streaming.rtpStream {
     // Synchronization source identifier.
     long? ssrc;
 
-    long? feedback_ssrc;
+    long? feedbackSsrc;
 
     long? clockRate;
 
@@ -38,6 +38,12 @@ namespace cast.streaming.rtpStream {
     // Video height in pixels.
     long? height;
 
+    // 16 bytes AES key encoded in Base64.
+    DOMString? aesKey;
+
+    // 16 bytes AES IV (Initialization vector) mask encoded in Base64.
+    DOMString? aesIvMask;
+
     // A list of codec specific params.
     CodecSpecificParams[] codecSpecificParams;
   };