Switch to standard integer types in ppapi/.

ppapi/thunk/ppb_file_io_api.h

 // Copyright (c) 2012 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_THUNK_PPB_FILE_IO_API_H_
 #define PPAPI_THUNK_PPB_FILE_IO_API_H_
 
+#include <stdint.h>
+
 #include "base/memory/ref_counted.h"
 #include "ppapi/c/ppb_file_io.h"
 #include "ppapi/c/private/pp_file_handle.h"
 #include "ppapi/thunk/ppapi_thunk_export.h"
 
 namespace ppapi {
 
 class TrackedCallback;
 
 namespace thunk {
@@ skipping 34 matching lines @@
   // Private API.
   virtual int32_t RequestOSFileHandle(
       PP_FileHandle* handle,
       scoped_refptr<TrackedCallback> callback) = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_PPB_FILE_IO_API_H_