PPAPI: Make blocking completion callbacks work.

ppapi/thunk/ppb_tcp_socket_private_api.h

Index: ppapi/thunk/ppb_tcp_socket_private_api.h
diff --git a/ppapi/thunk/ppb_tcp_socket_private_api.h b/ppapi/thunk/ppb_tcp_socket_private_api.h
index 689f590fc41ba4d423c000b79694c4b456e6e21b..22d41dd748f4141bd7f40fe92f4ef944932f4382 100644
--- a/ppapi/thunk/ppb_tcp_socket_private_api.h
+++ b/ppapi/thunk/ppb_tcp_socket_private_api.h
@@ -6,6 +6,7 @@
 #define PPAPI_THUNK_PPB_TCP_SOCKET_PRIVATE_API_H_
 
 #include "ppapi/c/private/ppb_tcp_socket_private.h"
+#include "ppapi/shared_impl/api_callback_type.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 
 namespace ppapi {
@@ -17,23 +18,23 @@ class PPAPI_THUNK_EXPORT PPB_TCPSocket_Private_API {
 
   virtual int32_t Connect(const char* host,
                           uint16_t port,
-                          PP_CompletionCallback callback) = 0;
+                          ApiCallbackType callback) = 0;
   virtual int32_t ConnectWithNetAddress(const PP_NetAddress_Private* addr,
-                                        PP_CompletionCallback callback) = 0;
+                                        ApiCallbackType callback) = 0;
   virtual PP_Bool GetLocalAddress(PP_NetAddress_Private* local_addr) = 0;
   virtual PP_Bool GetRemoteAddress(PP_NetAddress_Private* remote_addr) = 0;
   virtual int32_t SSLHandshake(const char* server_name,
                                uint16_t server_port,
-                               PP_CompletionCallback callback) = 0;
+                               ApiCallbackType callback) = 0;
   virtual PP_Resource GetServerCertificate() = 0;
   virtual PP_Bool AddChainBuildingCertificate(PP_Resource certificate,
                                               PP_Bool trusted) = 0;
   virtual int32_t Read(char* buffer,
                        int32_t bytes_to_read,
-                       PP_CompletionCallback callback) = 0;
+                       ApiCallbackType callback) = 0;
   virtual int32_t Write(const char* buffer,
                         int32_t bytes_to_write,
-                        PP_CompletionCallback callback) = 0;
+                        ApiCallbackType callback) = 0;
   virtual void Disconnect() = 0;
 };