[code coverage] Added Windows-specific path for sandbox file injection.

Also deleted an unnecessary include of unistd.h.

Bug: 990480
Change-Id: I5caa9a1dabcbb9e90bab1372bc38b8079c5a640e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1797644
Reviewed-by: Kentaro Hara <[email protected]>
Reviewed-by: Alex Moshchuk <[email protected]>
Commit-Queue: Sajjad Mirza <[email protected]>
Cr-Commit-Position: refs/heads/master@{#695848}
2 files changed