Cast audio only policy enforcement support.

extensions/browser/api/cast_channel/cast_socket.h

Index: extensions/browser/api/cast_channel/cast_socket.h
diff --git a/extensions/browser/api/cast_channel/cast_socket.h b/extensions/browser/api/cast_channel/cast_socket.h
index 2cb56a6ea538d35accf0e6dfdb705d0fa2f69bec..0ca4e3911b52c89d169bc87a0d9f00a37a6696e9 100644
--- a/extensions/browser/api/cast_channel/cast_socket.h
+++ b/extensions/browser/api/cast_channel/cast_socket.h
@@ -76,6 +76,10 @@ class CastSocket : public ApiResource {
   // Sets the channel id generated by ApiResourceManager.
   virtual void set_id(int id) = 0;
 
+  // Sets whether this socket is for a channel to a device claiming a video out
+  // capability.
+  virtual void set_has_video_out(bool has_video_out) = 0;
+
   // The authentication level requested for the channel.
   virtual ChannelAuthType channel_auth() const = 0;
 
@@ -138,6 +142,7 @@ class CastSocketImpl : public CastSocket {
   const net::IPEndPoint& ip_endpoint() const override;
   int id() const override;
   void set_id(int channel_id) override;
+  void set_has_video_out(bool has_video_out) override;
   ChannelAuthType channel_auth() const override;
   std::string cast_url() const override;
   ReadyState ready_state() const override;
@@ -294,6 +299,10 @@ class CastSocketImpl : public CastSocket {
   // canceled.
   bool is_canceled_;
 
+  // Whether this socket is for a channel to a device claiming a video out
+  // capability.
+  bool has_video_out_;
+
   // Connection flow state machine state.
   proto::ConnectionState connect_state_;