Switch to standard integer types in ppapi/.

ppapi/thunk/ppb_file_chooser_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_CHOOSER_API_H_
 #define PPAPI_THUNK_PPB_FILE_CHOOSER_API_H_
 
+#include <stdint.h>
+
 #include "base/memory/ref_counted.h"
 #include "ppapi/c/dev/ppb_file_chooser_dev.h"
 
 namespace ppapi {
 
 class TrackedCallback;
 
 namespace thunk {
 
 class PPB_FileChooser_API {
@@ skipping 18 matching lines @@
   virtual int32_t ShowWithoutUserGesture0_5(
       PP_Bool save_as,
       PP_Var suggested_file_name,
       scoped_refptr<TrackedCallback> callback) = 0;
 };
 
 }  // namespace thunk
 }  // namespace ppapi
 
 #endif  // PPAPI_THUNK_PPB_FILE_CHOOSER_API_H_