[NaCl SDK] Switch ppapi_simple to C library

native_client_sdk/src/libraries/ppapi_simple/ps_entrypoints_c.c

+/* Copyright (c) 2015 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file. */
+
+#include <ppapi/c/pp_errors.h>
+#include <ppapi/c/pp_module.h>
+#include <ppapi/c/ppb.h>
+
+#include "ppapi_simple/ps_interface.h"
+
+/* Defined in ps_instance.c. */
+const void* PSGetInterfaceImplementation(const char*);
+
+extern PPB_GetInterface g_ps_get_interface;
+
+int32_t PPP_InitializeModule(PP_Module module, PPB_GetInterface get_interface) {
+  g_ps_get_interface = get_interface;
+  PSInterfaceInit();
+  return PP_OK;
+}
+
+const void* PPP_GetInterface(const char* interface_name) {
+  return PSGetInterfaceImplementation(interface_name);
+}
+
+void PPP_ShutdownModule(void) {
+}