Implement parts of the Mojo TCP interfaces.

mojo/services/public/interfaces/network/tcp_bound_socket.mojom

Index: mojo/services/public/interfaces/network/tcp_bound_socket.mojom
diff --git a/mojo/services/public/interfaces/network/tcp_bound_socket.mojom b/mojo/services/public/interfaces/network/tcp_bound_socket.mojom
index 0772846d502489f6d7db43878b09b073bffabe69..973afc3bbf4eead49097a43ab2aa22ab90539d51 100644
--- a/mojo/services/public/interfaces/network/tcp_bound_socket.mojom
+++ b/mojo/services/public/interfaces/network/tcp_bound_socket.mojom
@@ -4,7 +4,7 @@
 
 import "mojo/services/public/interfaces/network/net_address.mojom"
 import "mojo/services/public/interfaces/network/network_error.mojom"
-import "mojo/services/public/interfaces/network/tcp_client_socket.mojom"
+import "mojo/services/public/interfaces/network/tcp_connected_socket.mojom"
 import "mojo/services/public/interfaces/network/tcp_server_socket.mojom"
 
 module mojo {
@@ -14,17 +14,19 @@ module mojo {
 //
 // A bound socket can be used to create a server socket listening on the
 // local address, or it can be used to create a client socket by connecting to
-// a remote host.
+// a remote host. Once StartListening or Connect is called on the bound socket,
+// ownership of the underlying socket will be transferred to the connected or
+// server socket, and the bound socket may be closed.
 interface TCPBoundSocket {
   // Puts the socket into server mode, awaiting incoming connections.
   //
   // Once this function is called, neither StartListening nor Connect can be
   // used on this socket again.
-  StartListening(TCPServerSocket& server);
+  StartListening(TCPServerSocket& server) => (NetworkError result);
 
   // Puts this socket into client mode by connecting to a remote host. If you
   // do not care about the local address or port, you can call
-  // NetworkService.CreateTCPClientSocket to connect directly and skip the
+  // NetworkService.CreateTCPConnectedSocket to connect directly and skip the
   // "bound" state.
   //
   // Once this function is called, neither StartListening nor Connect can be
@@ -32,7 +34,7 @@ interface TCPBoundSocket {
   Connect(NetAddress remote_address,
           handle<data_pipe_consumer> send_stream,
           handle<data_pipe_producer> receive_stream,
-          TCPClientSocket& client_socket)
+          TCPConnectedSocket& client_socket)
       => (NetworkError result);
 };