This reverts commit e0635650.

Reason for revert: This doesn't work for deps_os.

Original change's description:
> Fix an exception when trying to report a non-referenced recursedeps entry
> 
> Problem originally introduced in https://chromium-review.googlesource.com/c/440945/
> 
> BUG=685443
> 
> Change-Id: I16313bc7c09b0dd68c6ad118004f9d5cdfec0ddd
> Reviewed-on: https://chromium-review.googlesource.com/440394
> Reviewed-by: Dirk Pranke <dpranke@chromium.org>
> Commit-Queue: Dirk Pranke <dpranke@chromium.org>
> 

TBR=dpranke@chromium.org,caseq@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=685443

Change-Id: I69b59e91b4019af112bd676c125119eee1edddda
Reviewed-on: https://chromium-review.googlesource.com/440490Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Dirk Pranke <dpranke@chromium.org>