Add dullweber@ to site_settings/OWNERS

Change-Id: If3ec764097f8a52b4b144fa69bd1009711db95fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2424159
Commit-Queue: Christian Dullweber <dullweber@chromium.org>
Commit-Queue: Andy Paicu <andypaicu@chromium.org>
Reviewed-by: Andy Paicu <andypaicu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809726}

components/browser_ui/site_settings/OWNERS

 finnur@chromium.org
 hkamila@chromium.org
 andypaicu@chromium.org
-
-per-file CookieControls*=dullweber@chromium.org
+dullweber@chromium.org
 
 # COMPONENT: UI>Browser>Mobile>Settings