OWNERS: start a CrOS specific list for CrOS files in here

Bug: 900461
Change-Id: I74bf2a048f766d95a8d11d74f5a97e67898299fe
Reviewed-on: https://chromium-review.googlesource.com/c/1380591Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Nodir Turakulov <nodir@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>

CROS_OWNERS

+# Chrome OS developers looking over Chrome OS related files.
+lamont@chromium.org
+nednguyen@chromium.org
+saklein@chromium.org
+vapier@chromium.org

OWNERS

@@ -19,3 +19,10 @@ per-file autoninja*=brucedawson@chromium.org
 
 per-file ninjalog_uploader.py=tikuta@chromium.org
 per-file ninjalog_uploader_wrapper.py=tikuta@chromium.org
+
+per-file cbuildbot=file://CROS_OWNERS
+per-file chrome_set_ver=file://CROS_OWNERS
+per-file cros=file://CROS_OWNERS
+per-file cros_sdk=file://CROS_OWNERS
+per-file repo=file://CROS_OWNERS
+per-file support/chromite_wrapper=file://CROS_OWNERS