Add private Pepper API for dealing with PP_Flash_NetAddress.

ppapi/api/private/ppb_flash_tcp_socket.idl

Index: ppapi/api/private/ppb_flash_tcp_socket.idl
diff --git a/ppapi/api/private/ppb_flash_tcp_socket.idl b/ppapi/api/private/ppb_flash_tcp_socket.idl
index 7a8c4ca723329711610d51a3c73433b05f5ffa73..e832809b77bc5bfac79511a6b28ca519bec5d456 100644
--- a/ppapi/api/private/ppb_flash_tcp_socket.idl
+++ b/ppapi/api/private/ppb_flash_tcp_socket.idl
@@ -12,15 +12,6 @@ label Chrome {
 };
 
 /**
- * This is an opaque type holding a network address.
- */
-[assert_size(132)]
-struct PP_Flash_NetAddress {
-  uint32_t size;
-  char[128] data;
-};
-
-/**
  * The <code>PPB_Flash_TCPSocket</code> interface provides TCP socket
  * operations.
  */
@@ -121,4 +112,3 @@ interface PPB_Flash_TCPSocket {
    */
   void Disconnect([in] PP_Resource tcp_socket);
 };
-