Switch to standard integer types in ppapi/.

ppapi/nacl_irt/public/irt_ppapi.h

 /*
  * Copyright 2014 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.
  */
 
 #ifndef PPAPI_NACL_IRT_PUBLIC_IRT_PPAPI_H_
 #define PPAPI_NACL_IRT_PUBLIC_IRT_PPAPI_H_
 
 #include <stddef.h>
+#include <stdint.h>
 
 #include "ppapi/c/ppp.h"
 
 struct PP_StartFunctions {
   int32_t (*PPP_InitializeModule)(PP_Module module_id,
                                   PPB_GetInterface get_browser_interface);
   void (*PPP_ShutdownModule)(void);
   const void* (*PPP_GetInterface)(const char* interface_name);
 };
 
@@ skipping 12 matching lines @@
   int (*thread_join)(uintptr_t tid);
 };
 
 #define NACL_IRT_PPAPIHOOK_v0_1 "nacl-irt-ppapihook-0.1"
 struct nacl_irt_ppapihook {
   int (*ppapi_start)(const struct PP_StartFunctions*);
   void (*ppapi_register_thread_creator)(const struct PP_ThreadFunctions*);
 };
 
 #endif  // PPAPI_NACL_IRT_PUBLIC_IRT_PPAPI_H_