Revert "Move sandbox_win.cc to services/service_manager/sandbox/win"

This reverts commit 72709c6ea1b5d1bb9434f676a166b710bc3f20f3.

Reason for revert: Suspected for failure on GPU Win bots. See crbug.com/778423

Original change's description:
> Move sandbox_win.cc to services/service_manager/sandbox/win
> 
> Fix an IWYU in broker_services.h along the way.
> 
> BUG=708738
> 
> Bug: 708738
> Cq-Include-Trybots: master.tryserver.chromium.win:win10_chromium_x64_rel_ng
> Change-Id: I57fb3c3878aaa97207c85c1c1200b22707a138d6
> Reviewed-on: https://chromium-review.googlesource.com/724227
> Commit-Queue: Tom Sepez <tsepez@chromium.org>
> Reviewed-by: Will Harris <wfh@chromium.org>
> Reviewed-by: John Abd-El-Malek <jam@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#511512}

TBR=jam@chromium.org,tsepez@chromium.org,wfh@chromium.org

Change-Id: I62ef58dba2e9c3b7ffab34c20cfa8a697ae6d689
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 708738
Cq-Include-Trybots: master.tryserver.chromium.win:win10_chromium_x64_rel_ng
Reviewed-on: https://chromium-review.googlesource.com/738616
Reviewed-by: Khushal <khushalsagar@chromium.org>
Commit-Queue: Khushal <khushalsagar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#511606}
23 files changed