Switch to standard integer types in ppapi/.

ppapi/examples/crxfs/crxfs.cc

 // Copyright (c) 2013 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 <stddef.h>
+#include <stdint.h>
+
 #include <sstream>
 
 #include "ppapi/c/ppb_file_io.h"
 #include "ppapi/cpp/file_io.h"
 #include "ppapi/cpp/file_ref.h"
 #include "ppapi/cpp/instance.h"
 #include "ppapi/cpp/module.h"
 #include "ppapi/cpp/private/isolated_file_system_private.h"
 #include "ppapi/utility/completion_callback_factory.h"
 
@@ skipping 124 matching lines @@
 
 namespace pp {
 
 // Factory function for your specialization of the Module object.
 Module* CreateModule() {
   return new MyModule();
 }
 
 }  // namespace pp