Re-add dpranke@ as an OWNER for PRESUBMIT.py

Change-Id: I96f3a6a7e777066b87d9277c8a238bab40b4e94d
Reviewed-on: https://chromium-review.googlesource.com/959682Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Commit-Queue: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542842}

OWNERS

@@ -19,6 +19,7 @@ per-file BUILD.gn=file://build/OWNERS
 per-file codereview.settings=agable@chromium.org
 per-file DEPS=*
 per-file PRESUBMIT*.py=dcheng@chromium.org
+per-file PRESUBMIT*.py=dpranke@chromium.org
 per-file PRESUBMIT*.py=jochen@chromium.org
 per-file README.md=*
 per-file WATCHLISTS=*