Compilation warning on Windows

This reverts commit 6cb2ae82.

Change-Id: I4ecadf5d8e909f986da186a7326cfa0922ae8710
Reviewed-on: https://chromium-review.googlesource.com/294241Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Corentin Wallez <cwallez@chromium.org>