Cloning a bunch of stuff from the native_client repository at r6528

ppapi/native_client/src/shared/ppapi_proxy/upcall_client.cc

Index: ppapi/native_client/src/shared/ppapi_proxy/upcall_client.cc
===================================================================
--- ppapi/native_client/src/shared/ppapi_proxy/upcall_client.cc	(revision 0)
+++ ppapi/native_client/src/shared/ppapi_proxy/upcall_client.cc	(revision 0)
@@ -0,0 +1,40 @@
+// Copyright (c) 2011 The Native Client Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+//
+// Automatically generated code.  See srpcgen.py
+//
+// NaCl Simple Remote Procedure Call interface abstractions.
+
+#include "untrusted/srpcgen/upcall.h"
+#ifdef __native_client__
+#ifndef UNREFERENCED_PARAMETER
+#define UNREFERENCED_PARAMETER(P) do { (void) P; } while (0)
+#endif  // UNREFERENCED_PARAMETER
+#else
+#include "native_client/src/include/portability.h"
+#endif  // __native_client__
+#include "native_client/src/shared/srpc/nacl_srpc.h"
+#include "ppapi/c/pp_instance.h"
+#include "ppapi/c/pp_module.h"
+#include "ppapi/c/pp_resource.h"
+
+NaClSrpcError PppUpcallRpcClient::PPB_Core_CallOnMainThread(
+    NaClSrpcChannel* channel,
+    int32_t delay_in_milliseconds,
+    int32_t callback_id,
+    int32_t result)  {
+  NaClSrpcError retval;
+  retval = NaClSrpcInvokeBySignature(
+      channel,
+      "PPB_Core_CallOnMainThread:iii:",
+      delay_in_milliseconds,
+      callback_id,
+      result
+  );
+  return retval;
+}
+
+