Compiling fails with some combinations of gcc and glibc.
'size_t' does not name a type in proc_table.h

Change-Id: Id79e033dc72d836788551e076ced6dbd706ce902
Reviewed-on: https://chromium-review.googlesource.com/995422Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
Commit-Queue: Yuly Novikov <ynovikov@chromium.org>