Revert of Switch to standard integer types in sandbox/. (patchset #3 id:40001 of https://codereview.chromium.org/1538283002/ )

Reason for revert:
This appears to be causing a compile failure (macros.h omitted)

Original issue's description:
> Switch to standard integer types in sandbox/.
>
> BUG=138542
> TBR=cpu@chromium.org
>
> Committed: https://crrev.com/b5032dd2fd694a9bd7a9e96ad8fefcaf29c24c9e
> Cr-Commit-Position: refs/heads/master@{#366413}

TBR=cpu@chromium.org,avi@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=138542

Review URL: https://codereview.chromium.org/1539423002

Cr-Commit-Position: refs/heads/master@{#366428}
183 files changed