Revert 251265 "Setuid sandbox: exit(2) on SIGABRT"

> Setuid sandbox: exit(2) on SIGABRT
> 
> The setuid sandbox waits on its one child and then dies
> afterwards.
> 
> When receiving SIGABRT, instead of dumping core, simply exit the
> process. There is no interesting information to be gathered from
> knowing that the process is inside waitid(2), one should look at
> the child process instead.
> 
> This patch hopes to reduce red herrings.
> 
> BUG=334345
> NOTRY=true
> R=jorgelo@chromium.org
> 
> Review URL: https://codereview.chromium.org/165673002

TBR=jln@chromium.org

Review URL: https://codereview.chromium.org/164373005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251269 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251269
Restrict sandbox/win/src/sandbox_types.h only on windows.

BUG=None
TEST=compiled

Review URL: https://codereview.chromium.org/133503012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251270 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 251270