Cast:Adding signaling and infrastructure for adjustable delay

media/cast/rtcp/rtcp.h

Index: media/cast/rtcp/rtcp.h
diff --git a/media/cast/rtcp/rtcp.h b/media/cast/rtcp/rtcp.h
index 32af62268b3fe0b6ed50cc34fc7055f06274440d..59ba3d99f90551a84a9de9ffa7ec8280f254ec02 100644
--- a/media/cast/rtcp/rtcp.h
+++ b/media/cast/rtcp/rtcp.h
@@ -116,6 +116,9 @@ class Rtcp {
   // used to remove duplicates. The history will store at most |size| events.
   void SetCastReceiverEventHistorySize(size_t size);
 
+  // Update the target delay. Will be added to every sender report.
+  void SetTargetDelay(base::TimeDelta target_delay);
+
  protected:
   int CheckForWrapAround(uint32 new_timestamp, uint32 old_timestamp) const;
 
@@ -189,6 +192,7 @@ class Rtcp {
   base::TimeDelta max_rtt_;
   int number_of_rtt_in_avg_;
   float avg_rtt_ms_;
+  uint16 target_delay_ms_;
 
   DISALLOW_COPY_AND_ASSIGN(Rtcp);
 };