cast: Support for low-latency interactive mode

chrome/renderer/media/cast_rtp_stream.h

Index: chrome/renderer/media/cast_rtp_stream.h
diff --git a/chrome/renderer/media/cast_rtp_stream.h b/chrome/renderer/media/cast_rtp_stream.h
index 8cb98979831f2019e9f25c7970329d9a87ebbedc..fb9e265f2c8e6d912cd1cf7cc81c307ec58fde2e 100644
--- a/chrome/renderer/media/cast_rtp_stream.h
+++ b/chrome/renderer/media/cast_rtp_stream.h
@@ -46,6 +46,10 @@ struct CastRtpPayloadParams {
   // Default value (0) means use max_latency_ms.
   int min_latency_ms;
 
+  // Starting latency on animated content.
+  // Default value (0) means use max_latency_ms.
+  int animated_latency_ms;

[miu, 2015/12/03 21:26:22]

Please initialize this in the constructor.

Or, if you want to do a little quick clean-up, you could eliminate the
constructor and use default initialization for all these members (recently
approved Chromium style).  Meaning, the struct would look like:

  struct CastRtpPayloadParams {
    int payload_type = 127;
    int max_latency_ms = 1000;
    int min_latency_ms = 120;
    ...
  };

[Irfan, 2015/12/04 22:45:36]

Done.

+
   // RTP specific field to identify a stream.
   int ssrc;