MD Settings: add dpapad@ to some OWNERS files

R=dpapad@chromium.org
BUG=none
TEST=more reviews!
NOTRY=true

Review URL: https://codereview.chromium.org/1776973004

Cr-Commit-Position: refs/heads/master@{#380449}

chrome/app/OWNERS

@@ -21,6 +21,7 @@ per-file media_router_strings.grdp*=mfoltz@chromium.org
 per-file media_router_strings.grdp*=wez@chromium.org
 
 per-file settings*strings*=dbeam@chromium.org
+per-file settings*strings*=dpapad@chromium.org
 per-file settings*strings*=dschuyler@chromium.org
 per-file settings*strings*=michaelpg@chromium.org
 per-file settings*strings*=stevenjb@chromium.org

chrome/browser/resources/settings/OWNERS

+dbeam@chromium.org
+dpapad@chromium.org
 dschuyler@chromium.org
 michaelpg@chromium.org
 stevenjb@chromium.org

chrome/browser/ui/webui/settings/OWNERS

 dbeam@chromium.org
+dpapad@chromium.org
 dschuyler@chromium.org
 michaelpg@chromium.org
 stevenjb@chromium.org