Simplify interface for media/cast: CastTransportSenderImpl

media/cast/net/cast_transport_config.h

Index: media/cast/net/cast_transport_config.h
diff --git a/media/cast/net/cast_transport_config.h b/media/cast/net/cast_transport_config.h
index 82823ad3c5712303bcf39af1e5d3c886a5ed0600..dc63bee99a21323930bafbd384ac6158b93f4818 100644
--- a/media/cast/net/cast_transport_config.h
+++ b/media/cast/net/cast_transport_config.h
@@ -126,6 +126,8 @@ typedef base::Callback<void(scoped_ptr<Packet> packet)> PacketReceiverCallback;
 typedef base::Callback<bool(scoped_ptr<Packet> packet)>
     PacketReceiverCallbackWithStatus;
 
+// TODO(xjz): Rename PacketSender as it also deals with receiving packets.
+// http://crbug.com/589157.
 class PacketSender {
  public:
   // Send a packet to the network. Returns false if the network is blocked
@@ -138,6 +140,13 @@ class PacketSender {
   // Returns the number of bytes ever sent.
   virtual int64_t GetBytesSent() = 0;
 
+  // Start receiving packets. Pakets are submitted to |packet_receiver|.
+  virtual void StartReceiving(
+      const PacketReceiverCallbackWithStatus& packet_receiver) = 0;
+
+  // Stop receiving packets.
+  virtual void StopReceiving() = 0;
+
   virtual ~PacketSender() {}
 };